diff --git a/Tasks/AzureResourceGroupDeployment/operations/ParameterParser.ts b/Tasks/AzureResourceGroupDeployment/operations/ParameterParser.ts
index ef097afb2653..0187a9d981b4 100644
--- a/Tasks/AzureResourceGroupDeployment/operations/ParameterParser.ts
+++ b/Tasks/AzureResourceGroupDeployment/operations/ParameterParser.ts
@@ -31,7 +31,7 @@ export function parse(input: string) {
 }
 
 function isName(literal: string, specialCharacterFlag: boolean): boolean {
-    return literal[0] === '-' && !specialCharacterFlag;
+    return literal[0] === '-' && !specialCharacterFlag && isNaN(Number(literal));
 }
 
 function findLiteral(input, currentPosition) {