If you have compelling new evidence, and it must be compelling new evidence, and you can prove that this was concealed by the defendant, there is no reason why you cannot make an application to court to set the table in order aside and to reopen the matter.
However before doing that, you need to speak to the other side and give them the evidence that you have now acquired and ask them to they want to make another offer before you make an application to set the table in order aside and for the matter to be reheard.
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