how to change explicit pins to inherited connections pins

Hi

I used to write the below code to change explicit pins to  inherited connection pins.

explicit pin name is VDD,bidir pin.

i am changing it to vdd!

i used to get the below warning :

Warning: Pin "VDD": floating input/output.

 Pls let me know what was the problem :

 If i manually add inherit instance in schematic window ,it does'nt show warning.

This warning is caused when i do schCheck(cv).

 Pls help me out to resolve this issue.

pls see the below code i ahd written :

CODE i had written :

 cv=dbOpenCellViewByType("CMOS045_IO_DEVKIT_OD25_7M4X0Y2Z" "TEST" "schematic" nil "a")

name1="VDD"

netdb=car(setof(x cv~>instances (x~>pin~>term~>name == name1 )))

x_cord = car(netdb~>xy)
y_cord = cadr(netdb~>xy)

dbDeleteObject(netdb)

symbolId = dbOpenCellViewByType( "basic" "vdd_inherit" "symbol" nil "r")
instId = schCreateInst( cv symbolId "I23" x_cord:y_cord "R0" )

schCheck(cv)

Warning: Pin "VDD floating input/output

Pls let me know from where i am getting this error.

Thanks and regards

Subbhareddy