How to change a characters package during run time? [ANSWERED]

I've asked this question yesterday but to no avail there was no answers given to me so im going to post this question again with hopes of finding an answer.

Code sample:

ORIGINAL_RightUpperLeg.MeshId = RightUpperLeg.MeshId
ORIGINAL_RightUpperLeg.TextureID = RightUpperLeg.TextureID
ORIGINAL_RightUpperLeg.Size = RightUpperLeg.Size

i have tried to change the players mesh id and texture id but it comes with an error.

Error: Unable to assign property MeshId. Script write access is restricted

Is there any other method in doing this as it seems you cant just simply change the mesh ID. E.g. I am thinking of making the original package be transparent and add the new package into the player so its like thats the package they equipped now.Any thoughts? plus how would i weld it to the character

OR

Im also thinking in making my own custom character but this time it uses special meshes. As special meshes you can actually change the mesh ID. but i dont know if this is the best method. Any thoughts?

I dont want the player to equip the whole package only a part of it .E.g the torso

-Dev-

The last line is especially important.

Meshes can currently only be be uploaded using MeshParts or the game explorer. Once uploaded however, the content ID for the mesh can be used for the MeshId property. For more information on how to do this please see this tutorial. Note currently this property cannot be changed by scripts as the collision model of the mesh cannot be recomputed during run-time. Developers should not rely on this behavior as it is possible it may change in the future. Those looking for a custom mesh object that can be updated during runtime should use SpecialMesh.