diff --git a/lib/resources/campaign.js b/lib/resources/campaign.js
index 5879e85..7256cc8 100644
--- a/lib/resources/campaign.js
+++ b/lib/resources/campaign.js
@@ -176,13 +176,13 @@ export class LinkUnlinkNumberResponse {
      * linkNumber link number to Campaign
      * @method
      * @param {string} campaignID 
-     * @param {string} number
+     * @param {list} numbers
      * @promise {object} return {@link Campaign} object
      * @fail {Error} return Error
      */
-     linkNumber(campaignID, number) {
+     linkNumber(campaignID, numbers) {
         let params = {}
-        params.number=number;
+        params.numbers=numbers;
         let client = this[clientKey];
         return new Promise((resolve, reject) => {
             client('POST', action+campaignID+'/Number/', params)