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Hello @Imre_Erdelyi
Welcome to iotron,
Please show us your relevant blocks and the work you did and also see this

[New Users] How to ask a question (open new topic)

Before you ask a question / open a new topic please take care of the following points: The forum was previously searched for similar topics / issues. Give a precise (detailed) description of the issue / bug, the goal. Show the (relevant) blocks (images, screenshots of blocks in high quality). Debug your blocks (connect to Companion and right mouse click: → Do it). Name the Android version running on your (test) device. Do not open multiple threads on the same topic. If you haven’t already,…