Get value from string and pass it to another field

Hello all,

So I need your help to get a value from a string and put it on other field. I saw tons of exemples around, but I have several issues.

So I have a field named "Comments". I need to check if that field has some words on it. After find one of those words, I need to get the value after that word and pass it to another field named "Selo".

So far I have this code:

 private string selos;
         public string Selos
         {
             get { return selos; }
             set
             {
                 string[] stringToCheck = new string[] { "Selo:", "selo:", "Selos:", "selos:" };
                 string[] result;
                     if(string.IsNullOrEmpty(Comments) == true)
                     {
                         SetPropertyValue("Selos", ref selos, "None");
                     }
                     else
                     {
                         result = Comments.Split(stringToCheck, StringSplitOptions.RemoveEmptyEntries);
                         SetPropertyValue("Selos", ref selos, result[0]);
                 }
          }
         }

Issue 1: I filled the fields "Comments" but in VisualStudio - Watch, this field is allways null, so everything else is null. Issue 2: When I change the "Comments" data, the VS Watch recognizes changes and passes all the data in this field to the "Selos" field, which is not what I want. I just want data after stringToCheck...

Here's an exemple:

Comments: Everythings OK. Selo: Q457896; Q457897

Now, the code puts in "Selo" field: Everythings OK. Selo: Q457896; Q457897, however, it doesn't save this value in the database. What I really want is:

Field Selo - Q457896; Q457897

Please I need your help to get this working... What am I missing/doing wrong here?

Thanks