Hi Florian,
Thanks for your update.
We have analyzed the query and prepared a sample. In this, you can able to render the candle chart and from the drop down you can able to change to different financial series types. Also depends upon the interval type you can able to render the candle series. In a drop down you can able to change the interval type and depends upon this candle chart will be rendered.
Screenshot with interval type as days:
Screenshot with interval type as years:
Sample for reference can be find from below link.
If we have misunderstood your query, kindly revert us with more information on your query and with some screenshots, so that we can analyze and provide you the solution sooner.
Dharani.