In reply to raj@123:
I do not know the width of the register. I guess it is 64 bits.Correct?
Then you could use
regmodel.DLALR0.LA_31_LSB.write(.status)status) , .value (cfg.local_min_addr[0]));
cfg.local_min_addr[0] is 1 ord with the width of 49 bits. It would be useful to use the same width as the register width is.