I found that if I have dc sweep (temperature) alone it did not work. Even it is the script (tepa.ocn) from file which is generated by running simulation itself. It always says: Result dc are not available for "/space/simdirs/zhang/test_bandgap/spectre/schematic". Use Results() for a list of available results. Please specify a result name. I am not sure of this situation. Would you mind giving me some suggestion? Thanks part of my script: ............ analysis('dc ?saveOppoint t ?param "temp" ?start "-40" ?stop "95" ) desVar( "R_var" 43.66K ) ...................... desVar( "vinac" 666.842m ) save( 'v "/net22" ) temp( 27.0 ) run() selectResult( 'dc ) plot(getData("/net22") ) ~