Turning strings into expressions

To my dismay I had to find out today that there is no way to convert a string into an expression.

If I want to check if "Sprite.c"&loopindex, while having c0, c1, c2, ..., on that Sprite, I can only do that if c0/c1/c2/.. are numbers, not strings, via int(str("Sprite.c"&loopindex)). I can't do that if c0/c1/c2 are strings.

That's why I request the addition of an 'expr()' command, to turn strings into expressions.

Not only would such a feature be incredibly complex to implement, I don't think it's actually necessary. It looks like you want to use an index in to instance variables. Instead, you can put an Array in a container with the sprite and just index in to the array.