Bouton import database and filter by Variable

[awb_2014]

Hi everybody ,
I wanna create a button in form which can allow me to importe data base and when i select my file , i can select just the variable that i need .
Thank u

 

[spikepl]

Great.

But you forgot to show what you have done so far, and on what specific issue you are stuck.

 

[awb_2014]

So i create a form with button "loading database file " what i need it's something like that