Adds parse treatment for string format.

Adds format property to sine wave generator's name metadata

example/generator/GeneratorMetadataProvider.js

@@ -9,7 +9,8 @@ define([
             values: [
                 {
                     key: "name",
-                    name: "Name"
+                    name: "Name",
+                    format: "string"
                 },
                 {
                     key: "utc",

src/api/telemetry/TelemetryValueFormatter.js

@@ -81,6 +81,15 @@ define([
                 return printj.sprintf(formatString, baseFormat.call(this, value));
             };
         }
+        if (valueMetadata.format === 'string') {
+            this.formatter.parse = function (value) {
+                if (typeof value === 'string') {
+                    return value;
+                } else {
+                    return value.toString();
+                }
+            };
+        }
     }
 
     TelemetryValueFormatter.prototype.parse = function (datum) {

src/plugins/condition/ConditionManager.js

@@ -268,9 +268,7 @@ export default class ConditionManager extends EventEmitter {
     createNormalizedDatum(telemetryDatum, id) {
         return Object.values(this.telemetryObjects[id].telemetryMetaData).reduce((normalizedDatum, metadatum) => {
             const formatter = this.openmct.telemetry.getValueFormatter(metadatum);
-            const data = telemetryDatum[metadatum.source];
+            normalizedDatum[metadatum.key] = formatter.parse(telemetryDatum[metadatum.source]);
-            const parsedValue = formatter.parse(data);
-            normalizedDatum[metadatum.key] = _.isNaN(parsedValue) ? data : parsedValue;
             return normalizedDatum;
         }, {});
     }