MobileMessageBox.Message
From Xojo Documentation
Property (As String )
aMobileMessageBox.Message = newStringValue
or
StringValue = aMobileMessageBox.Message
New in 2020r2
Supported on Mobile.
or
StringValue = aMobileMessageBox.Message
New in 2020r2
Supported on Mobile.
A longer message that appears below the title in the message box.
Sample Code
Set the message:
MessageBox1.Message = "Would you like to update this information?"