The Network I created, very lively with 30 participating cities, have been focused on precisely the interchange of knowledge through different events, site visits or presentations so I have the ability to organize interesting activities for cities that they want to learn, managing the little resources the Network counts with (only a part of the total budget is funded), by means of the collaboration of the different cities to develop the events, and counting with the involvement at policy and technical level. During the past years, the events, presentations and activities I organized, focused on the knowledge and experience sharing, have been focused at the end to politicians and technicians of the cities, which then they will develop or implement the measures or actions or they will produce Ordinances or Normative at local level. My work has been focusing on this concrete point: firstly, how to make attractive the network I managed in order politicians and technicians want to participate and being actively involved, secondly, to think a message I think is important or interesting for the cities if they want to move to a more sustainable city (and citizens will see the quality of life is better and consequently, they will prefer a “green” city) and thirdly, how to present these messages in order they can easily understand, they do not get bored and it is so attractive that they want to develop or implement a similar measure or normative in their own cities. In that way to success it is important a reflection on what is more important, more engaged and more interesting for the cities based on good experiences, knowledge or reflections on how to implement measures or produce documents but at the same time trying to present it attractively and in a dynamic way. Other way to engage them is to count with other politicians (local, national or European level) that they are concerned as well, as this is a point to attract local politicians. Firstly, in the process of preparation of the different events and activities I organized, it was obviously necessary to ask for the need of the capacity-building. Every year theses needs are treated and discussed, normally in events, where politicians and technicians can discuss their problems. Also in many occasions it is interesting (and important) to ask for concrete needs. The feed-back is organized by me and sent to them again to reflect on what is more important to finally organize the events and activities based on their needs. In the different stages I have explained in the last section, apart from thinking about the message and how to transfer it in the best possible way, before this stage I always have the feedback of the cities about their needs. There is a point of subjectivity as I also worked for a City and I know first-hand their needs and problems, but normally after years of experience I am at least partly right (in each city conditions are different). In terms of measuring the results, apart from the typical evaluation test about the degree of satisfaction, it is important to remark and to take into account other aspects as number of measures implemented thanks to the knowledge or experience gained, number of normative produced or even number of attendees of the different events, as if they think it is important and crucial for their municipalities, they will implement as many measures and produce as many Ordinances as possible, and they will attend the events to be organized in the future.