Trigger Select Field to Calculated Field

[Anonymous]

I'm trying to create a trigger on a change to a variable which stores a date. The calculated field decides whether a record is either greater or equal to (Yes) and less than (No) the date selected. For creating the action on change for the variable, I've tried putting the same expression that I created in a multibox and put it in the "Field" field and the "Search String" to 'Yes'. That didn't work. Any ideas?

[Anonymous]

This post helped me answer my question

How to use Select in Field trigger for an AGGR calculated field?