Why won't the get player by display name work?

[fallow mortar]

I have made things similar to this but it doesn't seem to work this time

[civic cipher]

Dont create player lists that way

[fallow mortar]

oh

how do I do it?

[potent crest]

I think there is something with your list that’s changing your display name

[fallow mortar]

oh ok thanks

it works