I am not able to increase my balance via /pay command

[Ineedhelppleaseplease]

I have OP access in my server but when i do /pay XLordHelixX(whichismyname) 2000 , it shows error and my balance according to the plugin in -200$ ..... How do I pay myself money?

[Geolykt]

/pay is not implemented by Vault. Please complain to the plugin implementing it - but not to Vault.
Again, Vault is an API - but not the implementation of the Vault APIs. In itself it only provides the /vault command.