Unable to highlight a specific path with an error STA-0101

[Blueonics]

I have found a specific path that has hold time violations, and I was able to extract the path detail from timing report:

report_checks -rise_from {req_msg[26]} -rise_through {_387_/A1} -fall_through {_387_/Y} -fall_through {_389_/A2} -rise_to {_440_/D} -path_delay min -fields {capacitance slew input_pins nets fanout} -format full_clock_expanded

Then I want to highlight this path with a tcl script:

proc highlight_worst_hold_path {} {
    puts "Finding worst hold paths..."
    
    # Get the specific path using find_timing_paths
    set path_ends [find_timing_paths -from {req_msg[26]} \
                                    -through {_387_/A1} \
                                    -through {_387_/Y} \
                                    -through {_389_/A2} \
                                    -to {_440_/D} \
                                    -path_delay min]

    if {[llength $path_ends] == 0} {
        puts "No hold paths found."
        return
    }

    # Get all points along the path
    set point_pin_list {req_msg[26] _387_/A1 _387_/Y _389_/A2 _440_/D}
    
    # Get and highlight the nets
    set final_nets [get_nets -hierarchical -of_objects $point_pin_list]
    set net_list {}
    
    foreach net_obj $final_nets {
        set net_name [get_property -object_type net $net_obj full_name]
        lappend net_list $net_name
    }

}

highlight_worst_hold_path

Yet I kept on getting this error [WARNING STA-0101] object 'req_msg[26]' not found. even though I know it should exist and obviously it is what I am getting from the extraction of my timing report.

What could be going on here?

[QuantamHD]

I suspect it's an escaping issue. If you prepend \\ to req_message[26] it might change the answer

[Blueonics]

Thanks for the suggestion, but prepending \\ didn't work as the command find_timing_paths would just fail

[maliberty]

More likely you need to use lef/def style esacping, try req_message\[26\].

It might be easier to use the existing path viewer which already does layout highlighting than rolling your own.

[Blueonics]

I tested out your suggestion but got the same warning. Also just tried with a different path to see if the warning persists:

-rise_from {resp_rdy} -rise_through {_288_/A2} -fall_through {_288_/Y} -fall_through {_289_/B1} -rise_to {_411_/D} -path_delay min -fields {capacitance slew input_pins nets fanout} -format full_clock_expanded

still unable to find the it: [WARNING STA-0101] object 'resp_rdy' not found.

I can use the path viewer but during the flow i want to automate the visualization, i will see what i can do. Thanks a lot!