Power Apps Patch method for Multiselect people picker field

I have text box field in power app canvas app where I would like to populate office 365 users in search.

We have enabled multiple users selection.

Connect office 365 users in datasources

items: Office365Users.SearchUser({searchTerm:cbusername.SearchText,top:10})

Here, cbusername is the text box field name

while doing patch, we want to save it in SP List.

Refer this video: https://www.youtube.com/watch?v=bmft4JFWJiY

In the below example, I am using Office 365 users in textbox named "cbusername" and "cbapproversnames".

First using ForAll loop for office 365 users connected text box, Inside creating a collection and assigning ThisRecord.Mail ... values to the collection.

ForAll(

            cbusername.SelectedItems,

            Collect(

                ColPeopleToPatch,

                {

                    '@odata.type': "#Microsoft.Azure.Connectors.SharePoint.SPListExpandedUser",

                    Claims: "i:0#.f|membership|"&ThisRecord.Mail,

                    Department:"",

                    DisplayName:ThisRecord.DisplayName,

                    Email:ThisRecord.Mail,

                    JobTitle:"",

                    Picture:""

                }

            )

        );

        ForAll(

            cbapproversnames.SelectedItems,

            Collect(

                ColApproversPersonsToPatch,

                {

                    '@odata.type': "#Microsoft.Azure.Connectors.SharePoint.SPListExpandedUser",

                    Claims: "i:0#.f|membership|"&ThisRecord.Mail,

                    Department:"",

                    DisplayName:ThisRecord.DisplayName,

                    Email:ThisRecord.Mail,

                    JobTitle:"",

                    Picture:""

                }

            )

        );

        Patch(

            'Requests for Access',

            Defaults('Requests for Access'),

            {

                Title: "",

                Requester: ColPeopleToPatch,

                Approvers: ColApproversPersonsToPatch,

                'Permission Level': ListBoxPermissionLevel.Selected.PermissionLevelName,

                PermissionLevelID: ListBoxPermissionLevel.Selected.PermissionLevelID,

                Status: "Pending",

                Comments:txt_Comments.Text,

                SiteURL:txt_SiteURL.Text

            }

        );