Hi,
I have 3 objects : Payment, Opportunity, and Device.
The relationship is: Payment ---(Master-Detail)-- > Opportunity <--(Lookup)--- Device

What I'm trying to do is: When PaymentFieldStatus is edit, Update the related DeviceFields.

I tried to make a formula field on the device that shown me the "PaymentFieldStatus" and whan the value will change, update DeviceFields.
But the Workflow dosen't work on formula fields (because they not edit manually).

What more should I try?

Hi,
I have 3 objects : Payment, Opportunity, and Device.
The relationship is: Payment ---(Master-Detail)-- > Opportunity <--(Lookup)--- Device

What I'm trying to do is: When PaymentFieldStatus is edit, Update the related DeviceFields.

I tried to make a formula field on the device that shown me the "PaymentFieldStatus" and whan the value will change, update DeviceFields.
But the Workflow dosen't work on formula fields (because they not edit manually).

What more should I try?