Design Studio 1.6 variable prompts issue

Hi,

I work with Design Studio 1.6 (SP 0) and I'm having a problem with this case:

I have two Bex 7 queries :

Query Number 1 has  : Variabe 1

Query Number 2 has : Variable 2

I created DS_1 based on query number 1 and DS_2 based on query number 2.

I must load DS_1 and DS_2 in the same time.

I want to create two buttons such that button 1 opens the variable prompts window with only

Variable 1 and button 2 opens the variable prompts window with only Variable 2.

Is there a way to do this with the standard variable prompts window?

I looked around and didn't find a way to control the variable prompts window with code.

thank you,

Shelly