Set mixed stroke weights

Hi! Is it possible to set mixed stroke weights for a frame? The following code gives me an error

Expected “strokeWeight” to have type number but got object instead

      const m: IndividualStrokesMixin = {
        strokeBottomWeight: 1,
        strokeTopWeight: 2,
        strokeRightWeight: 1,
        strokeLeftWeight: 2,
      };
      figma.currentPage.selection[0].strokeWeight = m;