Is there a fixed length for NimbleDescriptor setValue()?

[RootDev4]

Hello everyone,

NimBLEDescriptor *ble_description = ble_data_characteristic->createDescriptor(NimBLEUUID((uint16_t)0x2901), NIMBLE_PROPERTY::READ); ble_description->setValue("foobar"); NimBLE2904 *ble_characteristic_descriptor = (NimBLE2904*)ble_data_characteristic->createDescriptor(NimBLEUUID((uint16_t)0x2904), NIMBLE_PROPERTY::READ); ble_characteristic_descriptor->setFormat(NimBLE2904::FORMAT_UTF8);

Setting the value to “fooba” (5 Bytes or less) or to "foobar1" (7 Bytes or more) for the descriptor results in an empty value ("No value") for 0x2904 descriptor in the LightBlue app. However, if I set it to “foobar” (6 Bytes), it works.

Maybe it's a problem with LightBlue? Or does setValue() need a length of exactly 6 bytes?
Does anyone have an idea?

[h2zero]

The 2904 value should not be set to anything other than what can be specified through the special member functions for it. Calling setValue is not supported.