I prefer just modifying the .utp than using TSLPatcher to place it in the proper location (see "Mission Vao Armband" for example).
Alternatively, if there's only one of the type in the module and it has an unique tag you can simply skip the 'searching' part of Fair Strides post
object oFootlocker = GetObjectByTag("[tag]", 0);
CreateItemOnObject("<template resref of item>", oFootlocker, <how many of the item, defaults to 1.>)
or if you want 1 new line;
CreateItemOnObject("<template resref of item>", GetObjectByTag("[tag]", 0), <how many of the item, defaults to 1.>)