if you disclose your charities that is well but if you hide them and give them to the poor that is better for you and it will atone for some of your misdeeds and allah is well aware of what you do.
إن تبدوا الصدقات فنعما هي وإن تخفوها وتؤتوها الفقراء فهو خير لكم ويكفر عنكم من سيئاتكم والله بما تعملون خبير