@ Author
A un-biased warm up take on your question before us,
Day-to-day marital life's dealings are not like sales pitch wherein you are able to sell a refrigerator to an Eskimo!
Reasoning:
1. The sum total advise to your two posts of date is that all she (via her legal representative) has to do is to call for income records from your company and there pops etiher 11 or 7 or moon.
I hope off the records you at least told your wife which company you work before marriage and / or as of date ? Even if that was/is like above opening "martrimonial market sales pitch" to hook a bride then also above para 1 stands good in eyes of Court to set the maint. laws justified being given to few of the needy wives.
Coming to your second question before us, yes you are right on mark meaning thereby maint. award can always be adjusted by placing on record of Court your up or down income accordingly till the specific case as per specific Act / Code she may or might file/ed.
Now before you start swearing upon us on above eye opening dharma I personally suggest you to do some homework – i.e. read last 150 messages here in Family Law and Criminal Law Forum on various maint. Laws and read answers / advise / suggestions / discussions. You will elevate to regional position by this homework believe me.
PS:
You see Mr. Chandrasekher (your profile is hyper linked). Here the forum is not filed with misogynist (your hyper linked remark in open forum is rebutted now by me now!) as you spelled in one of your post (6 days ago) but you see Mr. Chandrasekher few people come here to dis-spell misandry too. Hope now we both savy on this point !