Server Action condition, "or" "||" doesn't work?

Hi,

I have a CONDITION in one of my Server Actions. It simply states that if a field is NOT either/or then carry out the action. Am I doing something wrong. I find whenever I use OR. “|” it never works (condition is not honoured)
If I just use I exclude it works fine.

qr_name!='exclude_item_1'||qr_name!='exclude_item_2'

I also tried this:

qr_name!='exclude_item_1'||'exclude_item_2'

But this works if I use one exclude:

`qr_name!=‘exclude_item_1’