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Line 79: Line 79:     
function get_Y_from_X( obj, B ){
 
function get_Y_from_X( obj, B ){
if ( check(obj, B) !=  undefined ) {
+
if ( typeof check(obj, B) !=  undefined ) {
 
console.log( "entity is defined" )
 
console.log( "entity is defined" )
 
return dive(obj, B);
 
return dive(obj, B);
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