Hi Rob, Thanks for the clarification. I tried to set the test_reg value by calling the set_int_property with a random value from the python script but I got this error:
`Traceback (most recent call last):` ` File "registro_gain.py", line 360, in <module>` ` main()` ` File "registro_gain.py", line 338, in main` ` tb.start()` ` File "/usr/local/lib/python3/dist-packages/gnuradio/gr/top_block.py", line 111, in start` ` top_block_start_unlocked(self._impl, max_noutput_items)` ` File "/usr/local/lib/python3/dist-packages/gnuradio/gr/runtime_swig.py", line 4832, in top_block_start_unlocked` ` return _runtime_swig.top_block_start_unlocked(r, max_noutput_items)` `` RuntimeError: RuntimeError: AccessError: Attempting to write to property `test_reg' without access privileges! `` I thought that occurred because I hadn’t defined the set_int_property function inside my block controller. So I included the method and now I have the following error: `[ERROR] [RFNOC::GRAPH] Caught exception while initializing graph: RuntimeError: Attempting to double-register property: test_reg[USER:0]` I don’t know any other mechanism to change that signal in GNURadio so I will try to translate my graph to use the uhd API directly Kind Regards, Maria
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