how to call a value from another function?

[Paho]

if(current=="iwx_sprint_mp")
current=Sprint();
Sprint()
{
self endon("disconnect");
self notify("start_sprinting");
sprint_weap="iwx_sprint_mp";
slot="";
if(self getcurrentweapon()==self getweaponslotweapon("primary"))
slot="primary";
else
slot="primaryb";
self.sweapon=self getcurrentweapon();
return slot;
}