Guideline to umlauts, special characters and blank spaces
In general umlauts, special characters and blank spaces Umlauts are percent encoded for technical reasons in the Additional Properties Sheet (see: http://en.wikipedia.org/wiki/Percent-encoding).
Example:
Nestlé - Development of sales in % compared to the previous year
becomes:
Nestl%C3%A9%20‑%20Development%20of%20sales%20in%20%25%20compared%20to%20the%20previous%20year
This makes it necessary to percent encode string values even while transferring them from the scripting language or Standard Properties Sheet. (On the Internet there are many free tools for en-/decoding, for example: http://www.url-encode-decode.com/.)