I have created a calculated field, its value fill as status change to something particular.

It works fine, but when status change again, the value remove.

I checked the condition of calculated field, it is good enough.

I want to complete the condition with something like no action in else. ( so when status change my satisfied value will not remove )

I tried this ->  In else action : if status does not meet the  condition if; try to assign the same value, but it does not allow.

I also tried to leave the else action with no action but it does not allow me.

What can I do for that?

The problem is that when status change, the value also remove.