[Help] Punch distance how to change?

[visiofx2]

itemsdb.xml?

<PrimaryFire bullet="melee" damage="10" immediate="true" mass="10" decay="1" speed="300" area="0" delay="0" timeout="0" numShells="0" clipSize="1" reloadTime="0" activeReloadTick="0" rateOfFire="120" spread="0" recoil="0" numgrenades="0" grenadename="asr_grenade" firemode="001" ScopeType="default" ScopeZoom="0" />

i cant find distance or range

[MentaL]

[Castie1]

area="0"

[visiofx2]

what means?