[Solved] Affinity Designer 2.4, subtracting a Curve (line) from a rectangle or any shape doesn't work

[Tormy]

I just drew a rectangle.

On top of it I drew a thick line and I wanted to subtract it to the rectangle, creating a slot that is wide as the thickness of the line.

But all what I get is:

the line disappears and the rectangle remains untouched (and the layer of the line disappears also)

[Alfred]

The ‘Subtract’ geometry operation is intended for use with closed curves. This requirement was slightly blurred in version 1, where unclosed curves would be closed automatically beforehand.

To create a slot by subtracting a thick line, start by selecting the line and using the ‘Expand Stroke’ to convert it to a closed shape that mimics the appearance of the line (or simply draw a rectangle of the appropriate dimensions in the first place). You will then be able to subtract the closed shape (or the parametric rectangle) from the larger shape that encloses it.

[Old Bruce]

The line has zero thickness (regardless of the width of the stroke) so this is kind of what I would expect. You should use Expand Stroke to make the line a curve that has an actual thickness to subtract.

[Tormy]

Thank you guys. I was not aware about  the "expand stroke". It worked.