Hoping someone can give some help or advice.

I am just starting on the IFS Cloud journey and Workflows seems to be a big part, I have done the IFS Academy training but the exercises done do not help with me with my current scenario.

In Apps 10 this was achieved by a custom event which checked the new and old variables and then wrote some details to a history file (custom entity) when a subcontract status changed.

 I am struggling to  get this off the ground.