Update field after sales order signature validation

SOLVED

Hi,

In the sales order signature workflow, I want to update a field in the ORDER table when the user validates the order. I tried to add the action AWRKUPDFLD in the action tab of SOHSIG workflow, but I couldn't because the grid is already full of standard actions.

So I used the SOHSIGNOT workflow and I added my update action. It seems to be working but I would like to be sure that I am doing it in the right way. I want the update of my field occurs in the same transaction as the signature's update.

Thanks for your advice.