My needy parents & I'm helpless!!.....Plz advise......I can't use my husband's money.?

I am a Hindu girl married in Delhi & then went abroad.My husband who is the only child of his over possessive parents sends them 70%of his monthly salary, who control his money like hell & are v.sensitive that I may stop him from sending money in future.I came to India in between and did further studies.My husband paid almost 50,000/- Rs. for it after I begged my in-laws.Now I have found a job in Dubai.But now my my in-laws are forcing me to also send them a big part of my own monthly income while I wish to financially support my parents who are facing financial difficulties after my marriage.This is causing tensions & my in-laws say that since my husband spent on my education,so only he & my in-laws have the right over my earnings.My husband says that if I support my parents,he will never spend money on me in future.I want to add that my husband holds a joint account with my father-in-law in India from where money was funded for my studies.Can my in-laws dominate me like thi