Special variables in function calls

I have a plugin function which produces some output. In template it's called in a following way: {my_function arg1="val1" arg2="val2"} Is there any way to insert a value of, for example $smarty.get.my_var for one of the arguments??? Lines below cause compiler error. {my_function arg1="$smarty.get.my_var" arg2="val2"} {my_function arg1="{$smarty.get.my_var}" arg2="val2"} PS: I know that using directly request vars in templates is not a good practice, but this is just an example Dmitriy