simple syntax error

I can't see the problem.  I'm trying to use a boolean to control which pair of STL files I import, but neither the ? nor the if conditionals are accepted.  What am I missing?  I keep getting this:

Parsing design (AST generation)...

Saved backup file: C:/Users/jon/Documents/OpenSCAD/backups/Hollow Face Array for CNC 2-backup-PJfjlBZf.scad

ERROR: Parser error: syntax error, in file Hollow Face Array for CNC 2.scad, line 25 

Execution aborted

// faces are about 114 x 76 x 13
isOSCAD = true;

module PFaceA()
    translate([11, 90, 0])
        rotate([90, 0, 180])
            import("d:/stl files/Face-Plate-POS-1-decimatedx2.off", convexity = 1000);

module PFaceO()
    translate([11, 90, 0])
        rotate([90, 0, 180])
            import("d:/stl files/Face-Plate-POS-1.stl", convexity = 1000);

module NFaceA()
    translate([11, 90, 13])
        rotate([90, 0, 180])
            import("d:/stl files/Face-Plate-NEG-1-decimatedx2.off", convexity = 1000);

module NFaceO()
    translate([11, 90, 13])
        rotate([90, 0, 180])
            import("d:/stl files/Face-Plate-NEG-1.stl", convexity = 1000);

module PFace()
    if (isOSCAD) then PFaceO(); else PFaceA();
   
module NFace()
    isOSCAD ? NFaceO() : NFaceA();

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Thanks.  I know too many frigging languages.  Sigh

then

On Mon, 7 Dec 2020 at 14:08, jon <[hidden email]> wrote:

I can't see the problem.  I'm trying to use a boolean to control which pair of STL files I import, but neither the ? nor the if conditionals are accepted.  What am I missing?  I keep getting this:

Parsing design (AST generation)...

Saved backup file: C:/Users/jon/Documents/OpenSCAD/backups/Hollow Face Array for CNC 2-backup-PJfjlBZf.scad

ERROR: Parser error: syntax error, in file Hollow Face Array for CNC 2.scad, line 25 

Execution aborted

// faces are about 114 x 76 x 13
isOSCAD = true;

module PFaceA()
    translate([11, 90, 0])
        rotate([90, 0, 180])
            import("d:/stl files/Face-Plate-POS-1-decimatedx2.off", convexity = 1000);

module PFaceO()
    translate([11, 90, 0])
        rotate([90, 0, 180])
            import("d:/stl files/Face-Plate-POS-1.stl", convexity = 1000);

module NFaceA()
    translate([11, 90, 13])
        rotate([90, 0, 180])
            import("d:/stl files/Face-Plate-NEG-1-decimatedx2.off", convexity = 1000);

module NFaceO()
    translate([11, 90, 13])
        rotate([90, 0, 180])
            import("d:/stl files/Face-Plate-NEG-1.stl", convexity = 1000);

module PFace()
    if (isOSCAD) then PFaceO(); else PFaceA();
   
module NFace()
    isOSCAD ? NFaceO() : NFaceA();

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Also note the conditional '... ? ... : ...' is part of an expression.
Whereas if/else are statements.



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