I'm not sure why you would want to show the Record ID#, but you can make a summary field on the Parent for the Maximum Record ID# of the Children where the type of child is "Policy & Procedure".
Then that will either be a number or null (if there are none). Then look that up down to all Children and show that value on the Child records and have a form rule to only show that lookup field when the child record type is Communications.
More likely what you want to do though is to have a hyperlink on the communications child record to display the Policy Record.
You can make a Formula Rich Text hyperlink like this:
var text Words = "Link to Policy"
var text URL = urlroot() & dbid() & "?a=dr&rid=" & [Record ID# of the policy record from that lookup];
IF([Record ID# of the policy record from that lookup]>0,
"<a href=" & $URL & ">" & $Words & "</a>")
post back if you have syntax errors or questions
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Mark Shnier (YQC)
Quick Base Solution Provider
Your Quick Base Coach
http://QuickBaseCoach.commark.shnier@gmail.com
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