Can you please confirm if you are communicating with PSoC4-BLE using App?
Did u get it?
You need to write to the Client Characteristics Configuration Descriptor (CCCD) of that particular characteristics in the GATT server device (PSoC4 BLE) which is being used for sending the Notifications from the APP INVENTOR (GATT Client).
Please refer the CySmart Android App for enabling the notifications ( Writing to the CCCD) from below link.
Also, refer the PSoC 4 BLE Server Project ( Peripheral ) from below link to handle the CCCD write request. ( Here a Central project is also present , you can understand the functionality by going through both the projects )
I dont found how to put the notification enabled.
I atache how I configure the BLE device and the block in app inventor. With this configuration when I click Notify Button the app close.
Can you tell me where is the error?
Thank you. My best regards.