254. INVALID PARAMETER ARGUMENT FOR @SET( PARAM, VALUE).
The @SET function can be used in a calc section to set any of LINGO’s parameters . You must provide the parameter’s name as text, and a permissible value for the parameter. For instance, to turn set the iteration limit to one million, you would use @SET( ‘ITRLIM’, 1.e6). You can refer to documentation on the SET command to learn all the parameters and their names.