Dear Bravo Risky,
It is not a problem at all, provided you could prove that, you have been working for all these years after graduation. The case would be stronger, if you could show proof of continuous academic updation/ professional updations (like participation in seminars/ training programs/ shorter courses etc.). In Canada, age or gaps doesn't matter much, but you should remember that, at the admission process you are competing with fresh brains... Try to prepare strong SoP and ensure higher bands/points in Language Tests. If you have time try to get certifications in more languages too.
if you are intending to change field, make convincing statements regarding, new choice. As admission committees have good level of flexibility, I hope, your honesty will get result.
Wish you all the best.