Here is the JSL
names default to here(1);
dt=current data table();
:pack_date << data type(numeric)<<informat("y/d/d")<<format("m/d/y");
and this is the JSL that JMP generated when I did the conversion interactively
names default to here(1);
// Change column info: pack_date
Data Table( "BallMillHistory" ):pack_date <<
Set Data Type(
Numeric,
Format( "y/m/d", 10 ),
Input Format( "y/m/d" ),
Format( "m/d/y", 12 )
) << Set Modeling Type( "None" );
Jim