Have anyone used the poly resistor in there blocks ? If so, is this one the correct device name

res-generic-po

https://skywater-pdk.readthedocs.io/en/latest/rules/device-details.html#p-poly-precision-resistors https://github.com/google/skywater-pdk-libs-sky130_fd_pr/tree/f62031a1be9aefe902d6d54cddd6f59b57627436/cells/res_high_po I haven't used it yet, but maybe it is this one.

Will try and reply

The correct device name would be

sky130_fd_pr__res_generic_po

, but there are three poly resistor types. That one is the 50 ohms-per-square device.