How do i make a magic gem do magic?
What exactly do you mean? The GUI, Inventory and Menu (http://americangirlscouts.org/agswiki/index.php/GUI%2C_Inventory_%26_Menu) section of the BFAQ has some information on Inventory Interactions, and the Tutorial in the AGS Manual has some more basic Interaction help. Have you read these yet? What are you trying to do, and what is the problem?
How to 'do magic' depends a lot on how your game is set up - without a LOT more detail on what you want to do and what you've already tried, you won't really get a useful, simple answer.
Also, please don't make two threads to ask the same questions. However, I'll let this one stand to deal with the inventory question.
Oh Thanks sorry about that Im kinda new here and I'm really exited cuz this is cool by magic i ment like a blast or somtin and for inventory i ment like so a key will open a door.
EDIT:
And I made 2 because I didn't see the first until I'd made the second.
Don't double post - use the 'Modify' button to edit your post. And, how could you not see the first one - you posted it?
Using a key to open a door - Read the BFAQ and the Tutorial in the Manual. THey should explain everything you need to know.
The magic thing - That's still not much use. The blast can probbaly be done with a Character or Object animation (Character.Animate (http://www.adventuregamestudio.co.uk/manual/Character.Animate.htm) and Object.Animate (http://www.adventuregamestudio.co.uk/manual/Object.Animate.htm)), but you haven't said how you want it to be triggered (e.g. when you use the gem on a character, or when you click it in your inventory). Again, read over the manual and the BFAQ, think about when you want the 'magic' to happen, and decide where the interactions should go.
I could find it i though it be at the end also I want the magic to happpen when I click on it with a char and I did read that stuff I just dont know how to do this stuff!!