#define ATTRIBUTE_HIGHER_JUMP      1167

Attribute_1167_Prethink(iClient, &iButtons, &iSlot, &iButtonsLast)
{
	new float:g_fRightClick[MAXPLAYERS+1] = 0.0;	
    if (ClientHasAttribute(iClient, iSlot, ATTRIBUTE_HIGHER_JUMP))
    if (iButtons & IN_ATTACK2 == IN_ATTACK2) {
    if (g_fRightClick[client] + 0.8 > GetEngineTime() && OnGround(client) {
    {
	new Float:fJumpVelocity[3];
        GetVelocity(iClient, fJumpVelocity);
        fJumpVelocity[2] = 2.0;//or some other value
        TeleportEntity(iClient, NULL_VECTOR, NULL_VECTOR, fJumpVelocity);
    }
		g_fRightClick[client] = GetEngineTime();
    }
	return iButtons;
}