visual basic 2008

ok i need help i am trying to make a swim hack but it keeps saying writeafloat and rightalong is not declared here is my code

Dim stamina As Long
Dim stamina2 As Long
Call Readalong("WarRock", &H1363380, stamina)
stamina2 = stamina + &H288
Call Writeafloat("WarRock", stamina2, 100)

Post this in the VB section.