diff --git a/appDefinition.json b/appDefinition.json
index a1eacef..520e96b 100644
--- a/appDefinition.json
+++ b/appDefinition.json
@@ -10,10 +10,7 @@
   "executableScriptName" : "sampleApp.m",
   "inputFiles" : [ {
     "dataType" : "double_vector",
-    "multiplicity" : {
-      "minCount" : 1,
-      "maxCount" : 1
-    }
+    "multiplicity" : "1"
   } ],
   "inputParameters" : [ ],
   "outputs" : [ {