Three Dimensional Geometry: JEE Main 2021 Mathematics question

If the distance of the point (1, $-$2, 3) from the plane x + 2y $-$ 3z + 10 = 0 measured parallel to the line, ${{x - 1} \over 3} = {{2 - y} \over m} = {{z + 3} \over 1}$ is $\sqrt {{7 \over 2}}$, then the value of |m| is equal to _________.