Is there a more robust method than DoForEachSelectedClip?

Hello,

I am working on a script that utilizes clipDoForEachSelectedClip.

However, this has some strange properties that make it not very useful.
(Like the fact that the time counter is forced to be a sample......)

Is there any other way to do the same thing?

For example, here's a script that I'm having trouble making right now

function safePrepost() {

    sf.ui.proTools.menuClick({
        menuPath: ["View", "Main Counter", "Timecode"],
    });

    sf.wait({ intervalMs: 50, });

    sf.keyboard.press({
        keys: "tab",
    });

    sf.wait({ intervalMs: 50, });

    sf.keyboard.press({
        keys: "shift+tab",
    });

    sf.wait({ intervalMs: 90, });

    var space2 = sf.ui.proTools.selectionGet().selectionLength.split(":").join("");

    var space2num = Number(space2);

    if (space2num >= 1) {
        sf.keyboard.press({
            keys: "option+control+tab",
        });

        sf.ui.proTools.nudgeSet({
            value: "00:00:07:00.00",
        });

        sf.keyboard.press({
            keys: "command+numpad plus",
        });
    } else {
        sf.keyboard.press({
            keys: "option+control+tab",
        });
        sf.ui.proTools.menuClick({
            menuPath: ["Edit", "Trim Clip", "To File End"],
        });
    }

    sf.wait({ intervalMs: 90, });

    //sf.keyboard.press({
    //    keys: "control+tab",
    //});

    sf.ui.proTools.nudgeSet({
        value: "00:00:02:00.00",
    });

    sf.wait({ intervalMs: 90, });

    sf.keyboard.press({
        keys: "option+numpad minus",
    });

    sf.wait({ intervalMs: 90, });

    sf.ui.proTools.nudgeSet({
        value: "00:00:07:00.00",
    });

    sf.wait({ intervalMs: 90, });

    //sf.keyboard.press({
    //    keys: "tab",
    //});

    sf.wait({ intervalMs: 90, });
}


sf.ui.proTools.clipDoForEachSelectedClip({
    action: safePrepost,
    onError: 'Continue',
});

I want to extend the beginning and end of all selected clips.

I'd like to get some suggestions.
Please help me!

Best