alternative url=

I wonder if we can use 2x alternative url= ?

So if alternative url= number 1 fails
GO TO >
alternative url= number 2

Is it possible?

no sorry

it would be difficult to add thing like that?

well yes, as each alternative url would create a new "tree".

What i mean is - to use few "alternative urls" for ONE STEP, so no more trees i guess ?

But how should the program know with what link to continue?

if alternative url number 1 fails (ex. is not 200 OK) then try alternative url number 2

but usually you don't get anything else than a 200 reply...even if that url is not valid.