so, does this mean it is possible, assuming i'm willing to check for each param_types, and for the null termination param?
if so, where would i set the enable undefined expressions flag, and how do i check what the name of the expression they used is?
my only alternative is to have them put in multiple params by making them input an array by just making a string of the array, like myfunction("this,that,34,21,theother") and then deconstructing the string into substrings checking for numerical values, and converting them.
in other words, a big pain. if theres a way to get the undefined thing to work, regardless of how annoying it is, i'd prefer that over the string deconstruction thing