diff --git a/src/app/params-form/params-form.component.ts b/src/app/params-form/params-form.component.ts
index 97ca2a6..a13bf9f 100644
--- a/src/app/params-form/params-form.component.ts
+++ b/src/app/params-form/params-form.component.ts
@@ -54,9 +54,9 @@ export class ParamsFormComponent implements OnInit {
       if (this.paramsSchema.properties) {
         this.paramsFormInfo = this.schemaService.getFormInfoFromParamsSchema(this.paramsSchema);
       } else if (this.paramsSchema.oneOf) {
-        this.paramsOptions = this.paramsSchema.oneOf.map((oneOf: any) => {
+        this.paramsOptions = this.paramsSchema.oneOf.map((oneOf: any, index: number) => {
           const paramsOption = {
-            display: oneOf.title,
+            display: oneOf.title ? oneOf.title : `Option ${index + 1}`,
             schema: oneOf,
             paramsFormInfo: this.schemaService.getFormInfoFromParamsSchema(oneOf),
           };
@@ -126,11 +126,19 @@ export class ParamsFormComponent implements OnInit {
     this.paramsSchema = paramsOption.schema;
     this.paramsFormInfo = paramsOption.paramsFormInfo;
 
-    // NOTE(jwetzell): prune params that MUST change from the data when switch paramOptions
+    // NOTE(jwetzell): modify params that should change from the data when switch paramOptions
     Object.entries(this.paramsFormInfo.paramsInfo).forEach(([paramKey, paramInfo]) => {
-      if (paramInfo.isConst && this.data) {
-        if (this.data[paramKey]) {
-          delete this.data[paramKey];
+      if (this.data !== undefined) {
+        if (paramInfo.isConst) {
+          if (this.data[paramKey]) {
+            delete this.data[paramKey];
+          }
+        }
+  
+        if (paramInfo.default) {
+          if (this.data[paramKey] !== undefined && this.data[paramKey] !== paramInfo.default) {
+            this.data[paramKey] = paramInfo.default;
+          }
         }
       }
     });
diff --git a/src/models/form.model.ts b/src/models/form.model.ts
index 24db190..12f55aa 100644
--- a/src/models/form.model.ts
+++ b/src/models/form.model.ts
@@ -24,4 +24,5 @@ export type ParamInfo = {
   options?: string[];
   isConst: boolean;
   schema: any;
+  default?: any;
 };
diff --git a/src/services/schema.service.ts b/src/services/schema.service.ts
index c0fb0ba..fda4474 100644
--- a/src/services/schema.service.ts
+++ b/src/services/schema.service.ts
@@ -329,6 +329,7 @@ export class SchemaService {
                 }
               }
 
+
               paramsFormInfo.paramsInfo[paramKey] = {
                 key: paramKey,
                 display: paramSchema.title ? paramSchema.title : paramKey,
@@ -337,6 +338,7 @@ export class SchemaService {
                 isConst: !!paramSchema.const,
                 schema: paramSchema,
                 placeholder: '',
+                default: paramSchema.default ? paramSchema.default : undefined
               };
 
               if (paramSchema.examples && paramSchema.examples.length > 0) {