Fire action when Progress field reach 100%

hello

I created a specific action (after user update his profile) when a progress field reach 100% of completion.

I would like fire this action only 1 time...that mean if user modify later his profile (and completion decrease down of 100% for later reach again 100%), the action must not be fired. I suppose using condition is possible but how to do this check ?

I tried by playing with [var3_cb_progress] against [var1_cb_progress] but not luck.

any clue ?

update: The only way I found has been to create a checkbox and one more action. Then when progress reach 100% for the first time, the checkbox become 1. Then my primary action can be fired conditionally by looking on checkbox value. However I'm almost sure something was possible to do using a single action with appropriate condition.

Thank

Comparing var1 to var3 only works for regular fields that have stored values. That won't work for a calculated field like CB Progress Field. The only way to have what you're wanting is to have something else to condition against. Your checkbox idea would work.