Thank you,it works without problems.
Now I only want to ask if is there a way to store non String variables, like a small arrayList or a map for example?
From what I saw, the variable is a blob type but when using VariableCreate or Update, it asks for the text value of the Variable which for a blob is null. It seems that this is the value that goes into history, so is it possible somehow to save other non string values or at least to let me serialize the object into byte[] and then to base64 before sending to history?