please how can I change the direction of al elbow in a pipe route assembly?
It depends on how the elbow is inserted.
If its driven by the sketch arc, just redo the sketch to where ever you want it to point.
If its dropped in, you can right click and rotate with triad, or in edit route mode you can use the tab key to flip routing components
While inserting the fitting, before you click it in, press "shift"+ left or right arrow key. It will rotate it about the axis of pipe. You can set the angle in options. Default is, i believe 15°, which is generally to small of an angle (have to press it 12 times to rotate it 180°). I have it at 45°
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