1. Go to Settings -> Document Settings
2. Select Trigger tab
3. In the Field Event Triggers window, select the field that the user will select to activate the "pop-up"
4. Click the Add Action button under the OnSelect label
5. Click Add
6. Select Action Type External
7. Select the action Set Variable
8. Click OK
9. In the Variable field enter in the name of the variable you created
10. In the Value field enter a formula like the following: =if(GetSelectedCount(Customer)=1,1,0)
11. Click OK
12. Click OK
The variable should be entered in the Conditional field in the Layout tab of the object you want to appear and disappear.
Give it a test by selecting one of the values in the list.
Karl
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