Am 17.02.2026 um 14:00 schrieb Sven Schreiber:

...
For general scalars, I'm having no luck, though. I'm attaching a barebones example which doesn't work for me - meaning that its default is defined as 2, but that's not shown. (The corresponding variant with an int argument works OK.)

Well, looking at gui/fncall.c (following Allin's off-list directions) I found at least I typo, I guess. Here are lines 1799-1803 inside the function *double_arg_selector:

 err = min_max_def_from_ui(ui, dvals, 0);
    

 if (!err) {
    

 minv = dvals[0];
    

 minv = dvals[1];
    

 dflt = dvals[2];
    

}

As you can see, "minv" is assigned twice,
      and I guess the second one should be "maxv" instead (which exists
      at the top of the function).

Not sure whether that solves all the
      problems.

An unrelated extra GUI problem: When executing this package, there is a "+" button at the right, to create a new scalar variable. When I click it, I get a formula entry window. Then I just enter (wrongly) a new name (say "hu") but no formula. I get an empty error window with no message and a close button. (Apparently in the background "hu" is created and initialized as usual with NA, that's not the issue.)

Again, this is unrelated. The thing is that the creation of a scalar in the GUI is done differently when going through the session icon view. (There you get a window with all defined scalars in the form of a listing, and you can add new rows to that listing.) So perhaps only in this package execution context does this "create new scalar" window appear, and thus won't get much use I guess.

thanks

sven