+= block reports "variable doesn't exist"

[tethrarxitet]

I've been trying to create a block, ([ V]+=()::grey) which does the action to the variable, and should apply the new value to that variable. but here's a test run (this should report 6):

And this (which should report 12), also reports the same error.

Here's the definition for the += block.

Any help would be appreciated, thank you!

[coder_07]

I gave it the context of (this [caller V], and it fixed it

[offtopic]scripts out of context[/offtopic]

[tethrarxitet]

Thank you! However, this still raises an error at this block:

[mark4sisb]

Your problem seems to be that the "create variables" library and the "of (this caller)" blocks aren't playing nice together. However, the metaprogramming library comes with two blocks that work quite nicely.

Not only that, but it doesn't even require any "extension" blocks!

I'll let you figure out how you want to use these in your blocks.

[qw23]

This will work, too:

Note: variable is of type Any (unevaluated).

Demo