Need help adding new codes to your Slingbox, this is the place to ask. You're welcome to ask general Slingbox questions here, but be aware that most of us are not Slingbox experts.
It's all down to timing. I use that Custom Remote and find I can do the search. You will just have to experiment with how quickly you press the buttons.
Thanks for you help Alan. I just tried it on my phone and it works fine but not on the web browser. I'll have a little play with it and see how I get on