APP Filter Not Updating

[tandon]

Hi, I am trying to update formula using drop down filter however it's not updating and returned below error. It appears, it;s trying to update the operator (in formula) while selecting the value from drop down. In formula - it;s quite simple and I would like to update the values based on drop down selection. Please suggest where I am doing it wrong.

Error

[IraWatt]

No worries @tandon :) glad it worked for you in the end