--- a/modules/org.openbravo.client.application/src/org/openbravo/client/application/report/ReportingUtils.java	Thu May 21 11:12:40 2015 +0200
+++ b/modules/org.openbravo.client.application/src/org/openbravo/client/application/report/ReportingUtils.java	Thu May 21 11:15:48 2015 +0200
@@ -663,6 +663,8 @@
       String parameter;
       if (key instanceof net.sf.jasperreports.engine.JRExporterParameter) {
         parameter = ((net.sf.jasperreports.engine.JRExporterParameter) key).toString();
+      } else if (key instanceof String) {
+        parameter = (String) key;
       } else {
         parameter = "";
       }