Item showing on model

[juniior]

Hi I've just started modding wc3 maps just a few hours ago, read some guides/tut and some introduction about JASS(still don't know how to apply it for real use).

I saw this really cool item http://www.hiveworkshop.com/forums/models-530/ice-shield-128538/ wanted to make it so when unit picks up it create a special effect on unit.

i actually got it with simple triggers:

• Events -
• Unit - A unit Acquires an item
• Conditions -
• (item carried by (Triggering Unit) in slot 1) Equal to Ice Shield 0001 <gen>
• (item carried by (Triggering Unit) in slot 2) Equal to Ice Shield 0001 <gen>
• (item carried by (Triggering Unit) in slot 3) Equal to Ice Shield 0001 <gen>
• (item carried by (Triggering Unit) in slot 4) Equal to Ice Shield 0001 <gen>
• (item carried by (Triggering Unit) in slot 5) Equal to Ice Shield 0001 <gen>
• (item carried by (Triggering Unit) in slot 6) Equal to Ice Shield 0001 <gen>
• Actions -
• Special Effect - Create a special effect attached to the right, hand of (Trigerring unit) using war3mapImported\IceShard.mdx

but this simple trigger i use doesn't destroy the effect when i drop Ice Shield, and it create multiple effects when picked up again.

so i tried to do this:

it doesn't work, anyone knows why?