SKILL Lint "Unrecognized global variable" error when referencing CDF default values in pcDefinePCell

Hi!,

I am writing a SKILL PCell and trying to align the default parameter values in the pcDefinePCell by fetching cdfId to ensure the synchronization, as described in the "Introduction to SKILL PCell Programming" RAK (specifically Lab 4: Automatically Aligning Default Parameter Values)".

It describes to define cdf globally and use it in the parameter list and set to nil at the end.

For eg:

lib="PCell"
cellName="test"
cdf=cdfGetBaseCellCDF(ddGetObj(lib cellName))

pcDefinePCell(

list(ddGetObj(lib) cellName "layout")
list(
(w "float" cdf->w->defValue)
(l "float" cdf->l->defValue)
(layer "string" cdf->layer->defValue)
) ;parameters
let((cv)

;body

);let

);pcDefinePCell

lib=nil
cellName=nil
cdf=nil

So, When I run SKILL lint on this code, it flages lib, cellName and cdf as unrecognized global variables.

So, I tried wrapping the variables inside the let statement and run the skill lint, the outcome is that it still flags cdf as unrecognized global variable but not the variables lib and cellName.

Why only cdf is still flagged and not the other variables?

I want to know what is the best practice to avoid these warnings? Any suggestions or insights are appreciated.

Virtuoso version: IC618 Base release: "sub-version  IC6.1.8-64b.83 "

Thanks,

Thiruvenkata