IF statement for album removal

Support
1

I'll like to remove album content if it doesn't have the contain the word "riddim" or "project". I've use the following and nothing.

[#0]
T=5
1=$if($findi(%album%,riddim),%album%,)
F=ALBUM

or

[#6]
T=5
1=$if($strstr($lower(%album%),riddim),%album%,)
F=ALBUM_FINAL

[#7]
T=9
F=ALBUM

[#8]
T=5
1=%album_final%
F=ALBUM

2

I don't know the function

what is that supposed to do?

In general: $if() expects a boolean result (i.e. something is true or false) but you have to include some kind of comparison that can be true or false.
Right now, I don't see a comparison operator.

You can test your expression in Convert>Tag-Tag and see in the preview if it produces the correct result.

See more in the documentation: