Fix the variable to retrieve resource sequence

Fix the variable to retrieve resource sequence.

Change-Id: I331c87f5dd3fe4de3bc220db281368bd4b6dae1a
Issue-ID: SO-689
Signed-off-by: subhash kumar singh <subhash.kumar.singh@huawei.com>
diff --git a/bpmn/so-bpmn-infrastructure-common/src/main/java/org/onap/so/bpmn/infrastructure/properties/BPMNProperties.java b/bpmn/so-bpmn-infrastructure-common/src/main/java/org/onap/so/bpmn/infrastructure/properties/BPMNProperties.java
index 60f109a..0d7c4ab 100644
--- a/bpmn/so-bpmn-infrastructure-common/src/main/java/org/onap/so/bpmn/infrastructure/properties/BPMNProperties.java
+++ b/bpmn/so-bpmn-infrastructure-common/src/main/java/org/onap/so/bpmn/infrastructure/properties/BPMNProperties.java
@@ -21,6 +21,7 @@
 
 import java.util.Arrays;
 import java.util.List;
+import org.onap.so.bpmn.core.UrnPropertiesReader;
 
 import org.onap.so.bpmn.core.UrnPropertiesReader;
 import org.onap.so.logger.MsoLogger;
@@ -37,7 +38,7 @@
     }
 
     public static List<String> getResourceSequenceProp(String input) {
-        String resourceSequence = getProperty("mso.workflow.custom." + input + ".resource.sequence", null);
+        String resourceSequence = UrnPropertiesReader.getVariable("mso.workflow.custom."+ input + ".resource.sequence");
         if (resourceSequence != null) {
             return Arrays.asList(resourceSequence.split(","));
         }