Hello,

I developed a protocol for which I defined two parameters:

1. An URLType parameter named 'Docked ligand library' and

    2. A StringType parameter named 'Multiconformer library'.

The idea of these two parameters is to load an .sd/.sdf file in the 'Docked ligand library'. Once the library is loaded, then to autofill the 'Multiconformer library'. Since, the value of 'Docked ligand library' parameter is as \\\$(UserDir)/shapescr/Ec_NBTIs_neg_con_sols.sd, I tried to parse it within the 'Multiconformer library' parameter Legal Values Script window:

if (Parameter('Docked ligand library') ne '') then
SetLegalValues(RSubst(RMatch(RSubst(Parameter('Docked ligand library'),'_sols.sd','_4D.sdf'),'/([^/]+)\\\$','g'),'/',''));
end if;

 So, the expected value for the 'Multiconformer library' should be: Ec_NBTIs_neg_con_4D.sdf

However, it seems that the dollar sign of \\\$(UserDir) is the major problem, so when I manually remove it, the needed output is obtained. How to get rid of "\\\$" sign to achieve what I described?

Although, my attempt resulting (at least conceptually) in a selection list for the 'Multiconformer library' parameter, ideally I would like to be just a single string value containing the name 'Ec_NBTIs_neg_con_4D.sdf' (parsed as described above).

Many thanks to all of you for providing a solution to this issue.

Cheers,

Nikola