General about skill scripting

I'm using an if condition for gate routing positioning. The code runs without error but the gates are not placed. so please can you tell me why is this happening? you can find it highlighted in yellow

procedure(place_devices(cellView devLib devCell Length nfunit wfunit DUM1nf DUM1wf DUM2nf DUM2wf yPitch pattern)
let((params array nRows nCols Type dev name nf wf inst devCounts x y xPitch (x0 0.0) (y0 0.0))

devCounts=makeTable('DEVCOUNT 0)
array = listToVector(foreach(mapcar row reverse(pattern) listToVector(parseString(row " "))))
nRows=length(pattern)
y=y0
for(row 0 nRows-1
x=x0
nCols=length(array[row])
for(col 0 nCols-1
dev=array[row][col]
devCounts[dev]++
name=sprintf(nil "%s.%d" dev devCounts[dev])
Type=cond(
(eq('M getchar(array[row][col] 1)) 'device)
(zerop(row) && (zerop(col) || (col == nCols-1)) 'corner)
(zerop(col) && (zerop(row) || (row == nRows-1)) 'corner)
(zerop(row) || (row == nRows-1) 'topBottom)
(zerop(col) || (col == nCols-1) 'leftRight)
(t 'dummy)
)
caseq(Type
((device dummy)
nf=nfunit
wf=wfunit
)

(corner
nf=DUM1nf
wf=DUM2wf
)

(topBottom
nf=DUM2nf
wf=DUM2wf
)

(leftRight
nf=DUM1nf
wf=DUM1wf
)

(t error("type=%l\n" Type)
)
)

params = list(
list("l" "string" aelSuffixNotation(1u * Length))
list("w" "string" aelSuffixNotation(1u * wf))
list("fingers" "string" sprintf(nil "%d" nf))
if(oddp(row)
then
list("routePolydir" "string" "Bottom")
list("polyContacts" "string" "True")
else
list("routePolydir" "string" "Top")
list("polyContacts" "string" "True")
)
) ; params

when(zerop(col)
; Device is on left edge. Add detached bodytie.
params = xcons(params
list("bodytie_type" "string" "Detached"))
)

when(col == nCols-1
; Device is on right edge. Add detached bodytie.
params = xcons(params
list("bodytie_typeR" "string" "Detached"))
)

inst=dbCreateParamInstByMasterName(cellView devLib devCell "layout" name x:y "R0" 1 params)
xPitch = (nf * Length) + (nf * 0.2)

;; TODO: Replace numbers with space/extension params
;; Or, use rodGetObj and/or M1 geometry of the
;; inst->master cellView to calculate the xPitch
;; of the instantiated device

;; Calculate x coordinate for next device
x = x + xPitch

)
y = y + yPitch
)
dbSave(geGetEditCellView())

)) ; let ; procedure

place_devices(
geGetEditCellView() ; cellView
"tsmcN65" ; devLib
"pch" ; devCell
0.2 ; Length (um)
4 ; nfunit
3.0 ; wfunit (um)
4 ; DUM1nf
3.0 ; DUM1wf (um)
4 ; DUM2nf
3.0 ; DUM2wf (um)
3.78 ; yPitch (um)
list(
"Du Du Du Du Du"
"Du M1 M2 M1 Du"
"Du M2 M1 M2 Du"
"Du Du Du Du Du"
); pattern (rows)
)

Thanks

Regards