check instance binding layout Vs Schematic

I would like to check per instance the binding (XL compliancy) between Layout and Schematic.

Function bndGetBoundObjects can be used for this purpose, like:

foreach(insts cvId~>instaces

   bndGetBoundObjects(insts)

....

However this must be ran in XL mode

To overcome this, function lxRunCmdInXL should be used, however when using:

foreach(insts cvId~>instaces

  lxRunCmdInXL(cvId  'bndGetBoundObjects insts) 

....

I get the error: *Error* lxRunCmdInXL: extra arguments or keyword missing - ((db:0x5d0ef89a db:0x5d0ef89b))

What extra argument must be added?

Thanks!