uima ruta to edit src

[AmyJacksonKatrina]

i just want add some regex rules in seed.flex files which should work on 
eclipse while displaying output. How to make this to run. give me a 
detailed explanation. i just use the code below to add an annotaion as TAG 
in seed.flex file.



{\<}+ {
         
                TAG t = new TAG(cas);
                t.setBegin(yychar);
                t.setEnd(yychar + yytext().length());
       }