I want to create sub tree of sub trees how can i do that?
I want to create another tree for the Sub parameter also.

; create a root tree
indexTree=hiCreateTree('index11)
hiTreeAppendItem(indexTree hiCreateTreeItem('dow11 list("Parameter 1")))
; create two sub-trees
dowTree11=hiCreateTree('dows11)
hiItemInsertTree(dow11 dowTree11)
nasTree11=hiCreateTree('nass11)
hiItemInsertTree(nas11 nasTree11)
hiTreeAppendItem(dowTree11 hiCreateTreeItem('ibm list("Sub Parameter 2" )))
ibm11=hiCreateTree('ibsm)
hiItemInsertTree(dowTree11 ibm11)
hiTreeAppendItem(ibm11 hiCreateTreeItem('cdn111 list("Sub Parameter 1""tb1_par1""tb2_par1")))