is there a way we can use the variable within the API XML body. for example i can use below body with POST method to make a call to 35159, but i want to use a varibale instead of 35159, i tried using &call(call is a variable)
<Dialog>
<requestedAction>MAKE_CALL</requestedAction>
<fromAddress>58020</fromAddress>
<toAddress>35159</toAddress>
</Dialog>