Hi Moki,
To dial the UK from the US you would enter 011 44 followed by the Scotish number which must be 10 digit. In the first example you entered 011 44, but it seems you mistakenly left out the first 1 (one) in the Scotish number. In the second example you entered the Scotish number correctly (1294 559 ???), but you failed to add 011 44 in the beginning. So I believe you should have: 011 44 1294 559 ???.
I hope this helps. Let me know if you have any further questions.