Placing trees onto terrain

Ok, i used to have a way to randomly place trees onto a terrain but i cant find it, this is all i have, please help

For a = 1 To 1000

palm=CopyEntity( palm ) : ShowEntity palm
bx = Rnd (5000)
bz = Rnd (5000)
ScaleEntity palm1,15,15,15
PositionEntity palm1, bx,???????, bz
EntityType palm1,SCENE

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TerrainY()

what do i put in the command though?
TerrainY# (terrain,x#,y#,z# )
how would i set this up?

Use what you have already.

scaleentity palm1, 15,15,15      ;you don't need to specify these each Loop
EntityType palm1,SCENE           ;copyentity() copies entity commands as well as the mesh

For a = 1 To 1000

palm=CopyEntity(palm) 
bx# = Rnd (5000)
by# = 0           ;this number actually doesn't matter
bz# = Rnd (5000)
terrain_height# = terrainY(YOUR_TERRAIN'S_NAME, bx,by,bz)
PositionEntity palm1, bx,terrain_height, bz 


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YES! Thanks a lot Drak it works perfectly. i have been trying to get this to work for a long time.