Please add the snippet of code "*to show the spec limits on the graph (Show as Graph Reference Lines).*"

The preference to do this is Show Limits(1).

The script below opend the JMP sample data table **Semiconductor Capability.jmp**, uses the first 5 continuous variables, get the spec limits then add to the property Show Limits( 1 ). A variability chart of those 5 variables display teh spec limits, however they might be outside of the range of Y axis settings.

```
Names Default to here(1);
dt = Open("$sample_data/semiconductor capability.jmp");
cvar = (dt << get column names("Continuous", string))[1::5];
//do just 5
for(i=1, i<=nitems(cvar), i++,
ppl = column(dt,cvar[i]) << get properties list;
if(contains(ppl, expr(Spec Limits)),
sl = column(dt, cvar[i]) << get property("Spec Limits");
insert into(sl, { Show Limits( 1 ) });
Eval(EvalExpr(column(dt, cvar[i]) << Set Property("Spec Limits", expr(sl))));
);
);
varchart = dt << Variability Chart( Y( evallist(cvar) ), X( :lot_id, :SITE ) )
```