force sampaling I/O (IS commaned ) xbee (znet2.5)

Hi Guys! i am new here so i apologize if the thread is in the wrong place . I am trying to force sample (to requst I/O sampling for the Xbee end device ) . and i cant find the correct Api command structure , i looked in the datasheets and i can find how to do this .

i would appreciate some help .

Reagrds Amit