Hi Miguel,
it took me some time to figure the sequencer window out - never used it before.
It's a great tool.
Anyway, you are right - writing of a single parameter works.
It makes my life easier, since I need to constantly update multiple input levels
in order to implement custom audio development algorithm.
And.. I do miss 1442 with hardware slew and simplicity of consecutive safeload writing 
Thank you for the prompt and very helpful response,
Gennady