Can i use the condicions and validators like a 'if'?

Question

I need to do somenthing like: 
If 'custom field' = YES then make this field required
Can i do this with condicions and validators on transitions?

Trudy P Claspill · Accepted Answer

Hello @Cesar Bastos

Workflow Conditions determine whether or not a transition is available for an issue. If the condition is not met then you cannot even attempt the status transition.

Validators are applied after you have initiated the transition, made any updates that are possible to make during the transition, and then have clicked Save to complete the transition. It is after you click Save that the Validator is applied.

With the out of the box product it is not possible to code a Validator as you describe. That would require a third party app that extends workflow capabilities.