Having Google App Script run a condition from formula rather than a hardcode

Question

I'm have the following script below for an active googlesheet as a means to send an email notification when a condition is met. Currently, the script functions as it should with the only caveat being that it only does so when the condition is hardcoded rather than reading directly from a formula.

Would truly appreciate any help in figuring this out.

function sendEmails(e){
    const rData = e.source.getActiveSheet().getRange(e.range.rowStart, 1, 1, 12).getValues();
    let repName = rdata[0][3];
    let repStatus = rData[0][4];
    let repMarket = rData[0][0];
    let repSeg = rData[0][1];

    if(e.range.columnStart != 12 || e.values = "True") return;{
        GmailApp.sendEmail(email, "test email", "test message")
    }
}