thanks !

/* select similar length edge*/
var edgeSelected = moi.geometryDatabase.getSelectedObjects().getEdges().item(0).getLength();
var objs = moi.geometryDatabase.getSelectedObjects();
var tollerance = 1000;
if ( objs.numEdges == 1 ) {
var edge = objs.item(0);
var edgeL = objs.item(0).getLength();
var min = edgeL - edgeL/tollerance;
var max = edgeL + edgeL/tollerance;
var edges = edge.getParentBRep().getEdges();
for ( var i = 0; i < edges.length; ++i ) {
var edgeLoopL = edges.item(i).getLength();
if ( edgeLoopL> min && edgeLoopL< max)
edges.item(i).selected = true;
}
}