allow variable names to contain numbers #18
Description
Unfortunately it gives an error if I try to pass a variable name which has a number in it;
For example, a map with
{"catX":"33"}
evaluates fine; but if I pass:
{"cat1":"33"}
it says that there is no such variable "cat", ignoring the number in the name
if there is no way to solve this, maybe indicate that in the "readme" file