Give Variable on login

[seethingword]

Is it possible to give a variable on login if player name matches a specific name set by me in a variable?

[wishy]

33 minutes ago, seethingword said:

Ok so am i able to instead of check for player name, check for account name? to where all characters on an account can get the variable?

that would need a custom source edit i think

[wishy]

[wishy]

yes

[seethingword]

How?

[seethingword]

I dont understand the part 

\gv{trigger}

Do I put it in like that or is trigger supposed to be replaced with the player name?

[seethingword]

I figured it out 

[seethingword]

Ok so am i able to instead of check for player name, check for account name? to where all characters on an account can get the variable?