Read data from a datafield on a form

Hi everybody,

I'm completely new in sap business one and I'm having a problem concerning the sdk.

I added a button to the businesspartner form next to the phone1 field. Then I tried to read the phonenumber-value from item number 43 (phone1) on the businesspartner-form (form number 134), when you click on the button. I want to save this value in a temp variable in my visual-basic code.

I tried a lot and searched the sdk-examples but didn't find any working solution.

Is it possible to read the field-value from the form by using the ui-sdk or do I have to use the di-sdk?

If possible, could anyone please post a code-example in vb6?

Thanks very much!

Regards,

Tim Jaschik