Hi Peticel, here's an example:

var factory = moi.command.createFactory( 'dimhorizontal' );
var frame = moi.vectorMath.createTopFrame();
frame.origin = moi.vectorMath.createPoint(10,0,0);
factory.setInput( 0, frame );                               /* Input 0 - coordinate frame for dimension plane, frame origin at start point. */
factory.setInput( 1, moi.vectorMath.createPoint(20,0,0) );  /* Input 1 - end point */
factory.setInput( 2, moi.vectorMath.createPoint(15,10,0) ); /* Input 2 - text through point */
factory.setInput( 3, 0 );                                   /* Input 3 - index of Dimension properties preset to use */
factory.commit();

This will generate a dimension:


- Michael