Change CLR from int id to string.
diff --git a/language-agent/CLRMetric.proto b/language-agent/CLRMetric.proto
index ccbfabf..6cf5549 100644
--- a/language-agent/CLRMetric.proto
+++ b/language-agent/CLRMetric.proto
@@ -31,7 +31,8 @@
 
 message CLRMetricCollection {
     repeated CLRMetric metrics = 1;
-    int32 serviceInstanceId = 2;
+    string service = 2;
+    string serviceInstance = 3;
 }
 
 message CLRMetric {