diff --git a/src/axios.ts b/src/axios.ts
index 165eade..1e00a5e 100644
--- a/src/axios.ts
+++ b/src/axios.ts
@@ -73,7 +73,7 @@ export interface MultinetAxiosInstance extends AxiosInstance {
   updateSession(workspace: string, sessionId: number, type: 'network' | 'table', state: object): AxiosPromise<any>;
   renameSession(workspace: string, sessionId: number, type: 'network' | 'table', name: string): AxiosPromise<any>;
   getSession(workspace: string, sessionId: number, type: 'network' | 'table'): AxiosPromise<any>;
-  generateAltText(verbosity: string, explain: string, data: object, title?: string, level?: number): AxiosPromise<any>;
+  generateAltText(structured: boolean, data: object, title?: string, level?: number): AxiosPromise<any>;
   networkBuildRequests(workspace: string): AxiosPromise<number[]>;
 }
 
@@ -270,15 +270,14 @@ export function multinetAxiosInstance(config: AxiosRequestConfig): MultinetAxios
     return this.get(`workspaces/${workspace}/sessions/${type}/${sessionId}/`);
   };
 
-  Proto.generateAltText = function(verbosity: string, explain: string, data: object, title?: string, level?: number): AxiosPromise<any> {
+  Proto.generateAltText = function(structured: boolean, data: object, title?: string, level?: number): AxiosPromise<any> {
     const jsonString = JSON.stringify(data);
     const blob = new Blob([jsonString], { type: 'application/json' });
     const file = new File([blob], 'data.json');
 
     const formData = new FormData();
 
-    formData.append('verbosity', verbosity);
-    formData.append('explain', explain);
+    formData.append('structured', structured.toString());
     formData.append('data', file);
     if (title) {
       formData.append('title', title);
diff --git a/src/index.ts b/src/index.ts
index f95021d..c5b5ed4 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -285,8 +285,8 @@ class MultinetAPI {
     return (await this.axios.getSession(workspace, sessionId, type)).data;
   }
 
-  public async generateAltText(verbosity: string, explain: string, data: object, title?: string, level?: number): Promise<any> {
-    return (await this.axios.generateAltText(verbosity, explain, data, title, level)).data;
+  public async generateAltText(structured: boolean, data: object, title?: string, level?: number): Promise<any> {
+    return (await this.axios.generateAltText(structured, data, title, level)).data;
   }
 
   public async networkBuildRequests(workspace: string): Promise<number[]> {