Hallo. It´s me again with another newbie question. 
I imported tween module to my game and i woud like to make it work in room scripts. But there is error: Undefined Token ´TweenRegionLightLevel´
Whole script looks:
function region1_WalksOnto()
{
TweenRegionLightLevel (Region * 1, 0.5, 40, eLinearTween, eNoBlockTween); // Im not sure about this Region * 1
}
I´ve tried to figure it my self by studying Tween Demo game but unsuccesfully. (I accualy don´t know what to look for
)
If there is some sort of tutorial about this please link it. It would help me with another custom functions i´m going to create later.

I imported tween module to my game and i woud like to make it work in room scripts. But there is error: Undefined Token ´TweenRegionLightLevel´
Whole script looks:
function region1_WalksOnto()
{
TweenRegionLightLevel (Region * 1, 0.5, 40, eLinearTween, eNoBlockTween); // Im not sure about this Region * 1
}
I´ve tried to figure it my self by studying Tween Demo game but unsuccesfully. (I accualy don´t know what to look for

If there is some sort of tutorial about this please link it. It would help me with another custom functions i´m going to create later.