export of inital amount added

converter-sbml/src/main/java/lcsb/mapviewer/converter/model/sbml/species/SbmlSpeciesExporter.java

@@ -28,6 +28,9 @@ public class SbmlSpeciesExporter extends SbmlElementExporter<Species, org.sbml.j
     if (element.getCompartment() != null) {
       result.setCompartment(compartmentExporter.getSbmlElement(element.getCompartment()));
     }
+    if (element.getInitialAmount() != null) {
+      result.setInitialAmount(element.getInitialAmount());
+    }
     return result;
   }