@Chetanya Goyal: From the

sky130_add_opamp_labels() ,

we see that pin and label are assigned to some variables through met_pin. What are the values and how to determine these values in the

()

as these seem to be hard coded values ?

met2_pin = (69,16)
	met2_label = (69,5)
	met3_pin = (70,16)
	met3_label = (70,5)

These are the layer definitions. You can find the values for sky130 here: https://skywater-pdk.readthedocs.io/en/main/rules/layers.html#gds-layers-information