Need to make sense of this sentence

So the sentence is :
Caesar dixit Interim omnem ex fuga Suessionum multitudo in oppidum proxima nocte convenisse .

Now, I know that multitudo supposed to be multitudinem in that kind of sentence but I need to make sense of it the way it is. Without changing it.
Is it even possible?

Thank you.

This is what is written in the De Bello Gallico

Interim omnis ex fuga Suessionum multitudo in oppidum proxima nocte convenit.
http://www.gottwein.de/lattxt/Caes.Gall.2.12.php

If you want it to be in indirect speech, it must be multitudinem.

I know… :confused: I made it into indirect speech but I ruined it.
so there is no way to make sense of the sentence the way it is?

I need to make sense of it the way it is. Without changing it.
Is it even possible?

Sorry, but the answer to your question is no, it’s not possible.