Hi
Whew lol you had me for a second, but then it kinda went left field and I am not sure what is the question or issue fully.
Here is what I will say.
Yes, you can use it after creating it. But as I do not know the error or actual issue, its not possible to tell you anything other than standard stuff
When you create a new file, especially in Excel and then a table etc., you may need to add a Wait action of 3-10 minutes, before you can access it to do what you want. And if you do a Create Table, you might also have to do a wait of a few minutes as well.
This can and is the cause of many issues.
Can you add that and try again. Also can you share exactly what the error is you are getting.
Also, because its Dynamic, there is no way to have it give Dynamic Properties in the Design time, because it has no idea what the Table is going to look like in the file, even though you are like yeah but but but... :-( sorry