Hi @kameshm
You need to change the data structure of selected Office365Users from combobox to fit the structure of Person field in SharePoint.
The data structure of multi-select person field is a table with Chaims, Email, Department, JobTitle, Picture column.
If you are try to use ForAll function to save all gallery items to sharepoint list, I made a similar test, and the code should resemble this:
ForAll(
GalleryName.AllItems,
Patch(
'SP list',
Defaults('SP list'),
{
Title:ThisRecord.TextInputName.Text,
PersonFieldName: DropColumns(
AddColumns(
ShowColumns(
ThisRecord.ComboBoxName.SelectedItems,
"Mail"
),
"Claims",
"i:0#.f|membership|" & Mail,
"Department",
"",
"DisplayName",
"",
"Email",
"",
"JobTitle",
"",
"Picture",
""
),
"Mail"
)
}
)
)
Hope this helps.
Sik