Click “Upload attachment”
Click on “Browse” in the box next to filename. (Select the file that you want to post)
Click “Add to file” *****Looks like you may have missed this bit?*****
Add any comments
Choose to have the pic placed inline into the text like…
[attachment=0:179plx8f]IMG_1527 – Copy.JPG[/attachment:179plx8f]
Or leave for the file to displayed at the bottom of the message
[attachment=0:179plx8f]IMG_1527 – Copy.JPG[/attachment:179plx8f]