string template

[FISCHBACHER Markus]

i have a problem with the string template.

sometimes, when i create a new string variable, the new string is not empty.

eg.
a few strings before, a string contains the following data: "abcdefghijk".
after that i create a new string with the data: "xyz".
but the second string does not only contain "xyz" the rest of the first
string is appended.
this means, string two has the data: "xyzdefghijk".

i have no idea when this error occurs.
maybe when a funktionparameter is a string reference or a copy of the
string.
i have olso a 
i don't know.

is this a known problem?

thanks for answers.

markus

<<application/ms-tnef>>