String processing in template framework

[Jakub]

Is it possible to somehow match and parse the string within transformation template (CDT) ?

I have a string: Dictionary<String, Shift> and I would need:
1) detect tha string starts with Dictionary keyword
2)extract  second parameter -> Shift

I tried following but I am not sure what's wrong:
%If FIND(opReturnType,"Dictionary")>=0 %
$note=%opReturnType%
$ty=%TRIM(REPLACE(opReturnType,"Dictionary",""))%
$pos=%FIND($ty,",")%
$ty=%RIGHT($ty,LENGTH($ty)-$pos)%
$type=%TRIM(REPLACE($ty,">",""))%
%else%
$type= %opReturnType%
%endIf%

[Jakub]

$dic=%FIND(opReturnType,"Dictionary")%

%If $dic!="-1"%
$note="TODO://Replace: with java.util.Map "
$note+=%opReturnType%
$t=%opReturnType%
$pos=%FIND($t,",")%
$dict=%LEFT($t,$pos)%
$ty=%REPLACE($t,$dict,"")%
$typ=%TRIM_LEFT($ty,",")%
$typp=%TRIM_RIGHT($typ,">")%
$type=%TRIM($typp)%
$lowerBound="0"
$upperBound="*"
%endIf%