Unfortunately it was possible to add empty entries by clicking the "add Steemian" button. This behavior got fixed. From now on, the value within the field must not be empty to add new participants. Reported by 
From now on, users can consider reestemers as participants and do not need to add them on their own.
To enable this feature, I used the getRebloggedBy Function from the steemit api.
I needed to disregard the author from the result of the function, since it seems like the author is always within it. I dont think this is the wanted behavior from the steemit api function because I expect it to only return resteems made by other people.
As requested by 
Im going to move the diffrent recording methods of the user actions to one formula. This Formula will have checkboxes for each user action to take into account. Additionaly, the user will be able to weight each action (the amount of tickets which will be generated).
If they want to recompense each user actions diffrently they can do so for example
Upvote - 1 Entry
Comment - 2 Entry´s
Resteem - 5 Entry´s
If the user does all the requested actions, he will than have 8 tickets instead of 3 (currently). The weight can be adjusted by the user to fit their needs.
Also as reported here, by selecting multiple winners, currently the tool allows to draw the same participant over and over again. This behavior was not intended and will get fixed asap. All whats need to be done is to remove the tickets from the lucky one out of the pott. But for more flexibility, the user will be able to decide whether or not multiple drawings of the same people are allowed or not.
