Is Signal probe option not available within Quartus 19.3 pro? I used it in the past as explained by an Altera Engineer, but can't find it anymore. https://www.youtube.com/watch?v=20WwtqaA1dY

Ok the doc needs some update, this below was accepted:

set_instance_assignment -to kaya_r_io_D1 -name SIGNALPROBE_SOURCE rfd_ic_i|u_top|u_core|u_atlas|A_flexcomm_array[3].A_flexcomm|A_flexcomm|A_minuart_gen.A_minuart_core|div_inst|clk_div_inst|z_mux_inst|z

All signalprobe accepted keywords from the list:

SIGNALPROBE_ALLOW_OVERUSE

SIGNALPROBE_CLOCK

SIGNALPROBE_NUM_REGISTERS

SIGNALPROBE_SOURCE

SIGNALPROBE_ENABLE

SIGNALPROBE_DURING_NORMAL_COMPILATION