Form E disclosure by both parties?

Divorced in 1990's, all fully contested. Have been paying maintenance and then spousal maintenence ever since. I have now brought case for a variation in spousal maintenance and to get an end date as original order was for joint lives.
Es wife lives in a very substantial mortgage free house, kid's are in their 20's.

I have suffered with this recession, have no house, savings or money. I can earn enough to live but need to see a clean break somewhere on the horizon.

Have exchanged Form E's and responded to questionnaires. I was asked to (and supplied) copious financial ssupporting information personal and business accounts etc.

Ex wife has responded very poorly to my questionnaire (in my opinion). Her most recent Form E had a low value on former matrimonial home over which i retain a legal charge. Have asked for justification and her solicitor now says "this is not relevant to the application for a variation to maintenence". Same answer to other questions i have raised.

How can this be? I thought both sides had to fully disclose?

I am concerned that they propose the whole hearing (listed as one day) is ­base­d around my ability to pay. How so? Surely she has to fully declare her assets, income and needs as well?

I self represent, hence my concerns that her solicitor is manipulating the law to her benefit.

Am not sure house value is relevant but living costs, income etc would be.

What is the trigger for you having your share of the property? I thought it was usual for it to be when your children leave uni at the latest.

Wonder if there is some way of capitalising maintenance perhaps through foregoing your share of the property = depending on how much it is.

Hadenoughnow

Yes trigger for legal charge is youngest leaving Uni in 18 months.

My argument over the house value is that it is a very significant value which has been mortgage free for years and will be hers. My charge is small.
Effectively she could within just a few years downsize and have a large cash sum to see her into retirement.
I have nothing.

I cannot understand how it is not relevant when it gives the ex a very large financial asset. ie she does not need to be dependant upon me thus aiding my case for a clean break.