diff --git a/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view.xml b/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view.xml
index 5af5475264fef4c9c271529b40a4148985959c80..da2b168d09c952f852c4f3a73395bec9e27b471d 100644
--- a/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view.xml
+++ b/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view.xml
@@ -118,6 +118,7 @@
                         <string>my_destination_section_title</string>
                         <string>my_slap_state_title</string>
                         <string>my_translated_validation_state_title</string>
+                        <string>listbox_aggregate_parent_reference</string>
                       </list>
                     </value>
                 </item>
diff --git a/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view/listbox.xml b/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view/listbox.xml
index eb9a8a1e146a938f87b11c8bc24de3e62f83d831..64bae4e5bfc53d1d3ea398b4e72d3360c6a1b40b 100644
--- a/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view/listbox.xml
+++ b/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view/listbox.xml
@@ -134,6 +134,10 @@
                           <string>aggregate_parent_title</string>
                           <string>Computer</string>
                         </tuple>
+                        <tuple>
+                          <string>aggregate_parent_reference</string>
+                          <string>Computer Ref.</string>
+                        </tuple>
                         <tuple>
                           <string>getAggregateTitle</string>
                           <string>Computer Partition</string>
diff --git a/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view/listbox_aggregate_parent_reference.xml b/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view/listbox_aggregate_parent_reference.xml
new file mode 100644
index 0000000000000000000000000000000000000000..aad62f0c3db298087c1599f653ce46b9a4fc233b
--- /dev/null
+++ b/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view/listbox_aggregate_parent_reference.xml
@@ -0,0 +1,287 @@
+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="StringField" module="Products.Formulator.StandardFields"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>listbox_aggregate_parent_reference</string> </value>
+        </item>
+        <item>
+            <key> <string>message_values</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>external_validator_failed</string> </key>
+                    <value> <string>The input failed the external validator.</string> </value>
+                </item>
+                <item>
+                    <key> <string>required_not_found</string> </key>
+                    <value> <string>Input is required but no input given.</string> </value>
+                </item>
+                <item>
+                    <key> <string>too_long</string> </key>
+                    <value> <string>Too much input was given.</string> </value>
+                </item>
+              </dictionary>
+            </value>
+        </item>
+        <item>
+            <key> <string>overrides</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>alternate_name</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>css_class</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>default</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>description</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>display_maxwidth</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>display_width</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>editable</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>enabled</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>external_validator</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>extra</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>hidden</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>input_type</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>max_length</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>required</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>title</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>truncate</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>unicode</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>whitespace_preserve</string> </key>
+                    <value> <string></string> </value>
+                </item>
+              </dictionary>
+            </value>
+        </item>
+        <item>
+            <key> <string>tales</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>alternate_name</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>css_class</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>default</string> </key>
+                    <value>
+                      <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
+                    </value>
+                </item>
+                <item>
+                    <key> <string>description</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>display_maxwidth</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>display_width</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>editable</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>enabled</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>external_validator</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>extra</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>hidden</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>input_type</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>max_length</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>required</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>title</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>truncate</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>unicode</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>whitespace_preserve</string> </key>
+                    <value> <string></string> </value>
+                </item>
+              </dictionary>
+            </value>
+        </item>
+        <item>
+            <key> <string>values</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>alternate_name</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>css_class</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>default</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>description</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>display_maxwidth</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>display_width</string> </key>
+                    <value> <int>20</int> </value>
+                </item>
+                <item>
+                    <key> <string>editable</string> </key>
+                    <value> <int>0</int> </value>
+                </item>
+                <item>
+                    <key> <string>enabled</string> </key>
+                    <value> <int>1</int> </value>
+                </item>
+                <item>
+                    <key> <string>external_validator</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>extra</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>hidden</string> </key>
+                    <value> <int>0</int> </value>
+                </item>
+                <item>
+                    <key> <string>input_type</string> </key>
+                    <value> <string>text</string> </value>
+                </item>
+                <item>
+                    <key> <string>max_length</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>required</string> </key>
+                    <value> <int>0</int> </value>
+                </item>
+                <item>
+                    <key> <string>title</string> </key>
+                    <value> <string>Computer Reference</string> </value>
+                </item>
+                <item>
+                    <key> <string>truncate</string> </key>
+                    <value> <int>0</int> </value>
+                </item>
+                <item>
+                    <key> <string>unicode</string> </key>
+                    <value> <int>0</int> </value>
+                </item>
+                <item>
+                    <key> <string>whitespace_preserve</string> </key>
+                    <value> <int>0</int> </value>
+                </item>
+              </dictionary>
+            </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+  <record id="2" aka="AAAAAAAAAAI=">
+    <pickle>
+      <global name="TALESMethod" module="Products.Formulator.TALESField"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_text</string> </key>
+            <value> <string>python: cell.getAggregate() is not None and cell.getAggregateValue().getParentValue().getReference() or ""</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>