In some caches you get a value like an year number and use it for several variables like "xAxB".
The second number should be A, the last one B. Or "xAAx" where A should be composed from second and third letter.
Currently you can not prepare this because you have to enter the year value into the solver to be able to select the desired numbers/letters.
It would be nice to have a field to specify a pattern for selecting the parts of value.
Something like A = x$xx, B = xxx$, or A = x$$x