Error in parameters write for Ardupilot (Arducopter)

[kburda92]

I have a problem with parameters in Arducopter.
I try to set parameters RC5_OPTION, RC6_OPTION, RC7_OPTION and RC8_OPTION, sometimes it works but sometimes I got following errors:

[08:52:41|Warn ] Comparison type mismatch between int16_t and float (param_value.cpp:584)
[08:52:41|Warn ] Trying to compare different types. (param_value.h:70)
[08:52:41|Warn ] sending again, retries to do: 5  (RC9_OPTION). (mavlink_parameter_client.cpp:716)
[08:52:41|Warn ] Comparison type mismatch between int16_t and float (param_value.cpp:584)
[08:52:41|Warn ] Trying to compare different types. (param_value.h:70)
[08:52:41|Warn ] sending again, retries to do: 4  (RC9_OPTION). (mavlink_parameter_client.cpp:716)
[08:52:41|Warn ] Comparison type mismatch between int16_t and float (param_value.cpp:584)
[08:52:41|Warn ] Trying to compare different types. (param_value.h:70)
[08:52:41|Warn ] sending again, retries to do: 3  (RC9_OPTION). (mavlink_parameter_client.cpp:716)
[08:52:41|Warn ] Comparison type mismatch between int16_t and float (param_value.cpp:584)
[08:52:41|Warn ] Trying to compare different types. (param_value.h:70)
[08:52:41|Warn ] sending again, retries to do: 2  (RC9_OPTION). (mavlink_parameter_client.cpp:716)
[08:52:41|Warn ] Comparison type mismatch between int16_t and float (param_value.cpp:584)
[08:52:41|Warn ] Trying to compare different types. (param_value.h:70)
[08:52:41|Warn ] sending again, retries to do: 1  (RC9_OPTION). (mavlink_parameter_client.cpp:716)
[08:52:41|Warn ] Comparison type mismatch between int16_t and float (param_value.cpp:584)
[08:52:41|Warn ] Trying to compare different types. (param_value.h:70)
[08:52:41|Error] Error: Retrying failed set param failed: RC9_OPTION (mavlink_parameter_client.cpp:736)

The result of this operation is Timeout.
I use mavsdk::Param::set_param_int method but the same happens for mavsdk::Param::set_param_float
I use mavsdk v2.12.7.
It happens on official arducopter simulator (running from sim_vehicle.py)