Write invisible data to DB

Hello Forum,

I'm extending the service contract form. Behind the form my addin calculates some values. Now I want to save this values to DB. I have also extended the OCTM (table for the service contract) with some user defined columns. Currently I'm creating invisible Textboxes on the form and by saving the calculated values to the textbox.value property I can write them to db.

Is there a easier way? I could create a B1-independent table and write directly into it. But then I will have to rewrite lots of code.

Thanks

Mark