Close #263

This solution may be temporary if risks of creating several instances of
the class in same millisecond (uses nanotime but not sure what is the
resolution).

Author: Open Lowcode SAS

src/org/openlowcode/server/action/SInlineEchoActionRef.java

@@ -39,7 +39,7 @@ public class SInlineEchoActionRef<E extends DataEltType>
 	 * @param dataelementtype type of data to transfer
 	 */
 	public SInlineEchoActionRef(E dataelementtype) {
-		super("ECHO", SystemModule.getSystemModule().getName(), -1, true);
+		super("ECHO"+Thread.currentThread().getId()+System.nanoTime(), SystemModule.getSystemModule().getName(), -1, true);
 		this.dataelementtype = dataelementtype;
 	}