Hi @skini76 ,
Firstly, I couldn't find your screenshoot.
Could you attach another time?
Secondly, could you tell me your formula in details?
The right syntax to send email should like this:
Office365Outlook.SendEmailV2(To,Subject,Body)
The parameters are:

If you send email with attachments , you should try:
Office365.SendEmailV2("abc@def.com","Subject","EmailBody",
{Attachments:AddColumns(Gallery1.Selected.Attachments, "Name", DisplayName, "ContentBytes", Value, "@odata.type", "")})
If you send email with html text, you should try:
Office365.SendEmailV2(
"email address ",
"subject",
"html body",
{
IsHtml:true,
Importance: "Normal"
}
)
Best regards,