House bought in Brussels through a UK Dormant Company. Is the dormant company liable for Belgian taxes .

I am selling my house that I bought through a dormant company I set up in the UK, as at the time was the only solution . This company has never operated and has always been dormant. Belgian tax people now say I owe money on this company's assets. Is this true ?? Is there a Lawyer that knows tax law when dealing with a dormant UK Company. If so can I have your details, or even some advice