Call Transaction

Hi every body,

i stuck up with one problem,i.e..

i have call one transaction for that i am using statement

Call transaction 'VA01'.

Now thing is that,when i call this transaction from my program i am able to see the sales order scree.

if i am giving ORDER TYPE is OR > then i have to click enter > again i want to go back my program

there i have to use this order type( means in my programm).

Please help me