Shadow Meld (Hide) Ability Question

[Worldenergy]

Hi! Could somebody tell me how am I able to the make Shadow Meld (Hide) ability usable at daylight?

 

[Need_O2]

Every 0.5 seconds (that wouldt lag I guess)
Pick Every Units With Shadowmeld (Its a dummy ability that does nothing and its clickable)
If (Picked Units) current order is Stop or Hold Position
then
Add Permanent invisiblity ability to Picked Unit (Im not sure about name of ability but Shades have it)
else
Remove Permanent invisiblity ability from Picked Unit

Another Trigger
When Someone casts shadowmeld
pause it
order it to stop
unpause it
Give it Permanent invisiblity

 

[Worldenergy]

I hoped that there is a way to do this without triggers but I see there isn't. By the way thanks for helping!

 

[Need_O2]

Well there is permanent invisiblity but its invisible when walking too

 

[Zinive]

How about giving the unit windwalk and turning off movement speed?