return isChangeAllowedByUser;
}
private String setFirstInstance(String expr){
Transform transform=new Transform();
List<Token> tokenList=transform.tokenize(expr);
for(Token token: tokenList){
if(token.m_id==Transform.t_DE){
String sourceDe=token.m_str;
Matcher matcher=PATTERN.matcher(sourceDe);
if(matcher.find()){