yup

i think theres 2...
set matrix height [matrix],[tilex],[tiley],[height]
and
return = get matrix height([matrix],[x],[z])

now i think its simple enough to get the positions even without a command but simple doing
MatrixZ / MatrixTileZ = fUnitPerTileZ#
MatrixX / MatrixTileX = fUnitPerTileX#
then all you do is assuming dwTileCount X Y is the Tile your looking for
fTilePosX# = fUnitPerTileX# * dwTileCountX
fTilePosZ# = fUnitPerTileZ# * dwTileCountY
fTilePosY# = get matrix height(dwMatrix, fTilePosX#, fTilePosY#)

probably best to throw most of the information into an array PRE use - so all you need to do is lookup the array
dim ptrTileArray#(TileX,TileZ,3)
the return is 1 = X# 2 = Y# 3 = Z#

simple no?
Anata aru kowagaru no watashi! 