Linebreak in email body via a!safeLink

Hello,

I am currently trying to compose a new Outlook email upon clicking a link from the Appian interface. I am unable to insert a line break in the body of the email. Any thoughts on how to resolve this issue ?

Thanks,

Sidd

{
  a!richTextDisplayField(
    value: {
      a!richTextItem(
        text: "Click to send Email ",
        link: a!safeLink(
          uri: concat(
            "mailto://abc@xyz.com?subject=Test Email &cc=qwe@xyz.com &Body=",
            "Hello " & char(
              10
            ) & "user"
          )
        ),
        size: "MEDIUM"
      )
    }
  )
}