Setting the value of some editText

Hello,

I have created a Customer, Contract, CustomerEquipmentCard and whatever is needed to create a service call (all through a custom form using the DI).

Now, through that custom form I want to change the internal serial number on the already open Service Call form so it'll open up the data automatically (when I do it manually it works)

However when I do it manually it pops up the lookup (ChooseFromList) window which I prefer the user wouldn't see.... is there any way to set that internal number from an external form without that lookup window popping up?

thanks.