Using Prompt to get a String. Does not work inside an If/Else?

@samuel_henriques bugging you again, or anybody who sees the problem really, but you wrote these two scripts.

LOW PRIORITY I know I've been asking countless quesitons.

So I'm taking your 'next memory location by name' script from here -> Identical Marker Navigation #post-16

And because my spelling is TERRIBLE trying to slot in your prompt to pull the memory location name instead from here -> Using Prompt to get Item.map for memory locations? #post-4

However when I use the below Script, the Prompt Menu only flashs for a brief second.

function getNextMatchedMemoryLocation(locationName) {

    let mainCounter = sf.ui.proTools.getCurrentTimecode().stringValue

    //  if main counter is bars beats, remove last three digits, since memory locations list ignores them
    mainCounter.match(/\|/) ? mainCounter = mainCounter.slice(0, -3) : null

    let cleanMainCounter = Number(mainCounter.replace(/[^0-9]/g, '').trim())

    const memoryLocations = sf.proTools.memoryLocationsFetch().collection["list"].filter(x =>
        Number(x.mainCounterValue.replace(/[^0-9]/g, '').trim()) > cleanMainCounter &&
        x.name.match(locationName)
    );

    try {
        sf.ui.proTools.memoryLocationsGoto({
            memoryLocationNumber: memoryLocations[0].number
        });
    } catch (err) { log(`End of location markers containing:\n${locationName}`) }
}

function prompt(item) {
    let prompt = sf.interaction.popupSearch({
        items: item.map(x => ({ name: x["Name"] }))
    }).item.name
    return prompt
};

sf.ui.proTools.appActivate();

const ctrlIsEnabled = event.keyboardState.hasControl
let memoryLocations = sf.proTools.memoryLocationsFetch().collection['List']
let promptValue = prompt(memoryLocations)

if (globalState.markerName == undefined || ctrlIsEnabled) {

    globalState.markerName = promptValue;

} else {

    getNextMatchedMemoryLocation(globalState.markerName)
}

I tried putting the let 's inside the if{} as well.

HOWEVER, if I take it out and make it it's own standalone script, the prompt works correctly.

function prompt(item) {
    let prompt = sf.interaction.popupSearch({
        items: item.map(x => ({ name: x["Name"] }))
    }).item.name
    return prompt
};


let memoryLocations = sf.proTools.memoryLocationsFetch().collection['List']
let promptValue = prompt(memoryLocations)

globalState.markerName = promptValue;

But why? And also, how would I correct that?

Thanks!
Owen