Can you please translate this to english for me?

i have this friend of mine (shes a lebanese girl) and i know her in reality. when i talk to her on msn she sometimes puts 'ya 7elo' in the end of her sentence she did this 3 times maybe for example : 'ok ya 7elo' and i didnt ask her what it meant back then but can you please tell me what it means? thanks :)