A think hook for Panels using ConVars as a value. Call it in the Think hook. Sets the panel's value should the convar change.
This function is best for: checkboxes, sliders, number wangs
For a string alternative, see Panel.ConVarStringThink.
Important: Make sure your Panel has a SetValue function, else you may get errors.
How it should be implemented into your input.
function PANEL:Think() self:ConVarNumberThink() end