Php – How to pass data from controller to model in laravel 10

I have been preparing one application in Laravel 10 and in my app I am not connecting with DB as it is just PHP code and based on that need to create CSV file. I have prepared my code in controller and model function as per below.

My controller file:

<?php

namespace AppHttpControllers;

use IlluminateHttpRequest;
use AppModelsgetPaymentDatesModel;
class getpaymentdatescontroller extends Controller
{
    //
    public function getPaymentDatesCSV(Request $filename){

        $storageDir = getPaymentDatesModel::StorageDirPath();
        $filePath = $storageDir.$filename;
        $result = getPaymentDatesModel::GenearePaymentDateListCsv(array($filePath));
        
    }
}

My Model file:

<?php

namespace AppModels;

use IlluminateDatabaseEloquentFactoriesHasFactory;
use IlluminateDatabaseEloquentModel;
use IlluminateSupportFacadesStorage;
use IlluminateHttpRequest;

class getPaymentDatesModel extends Model
{
    
    public string $filePath;

    public static function scopeGenearePaymentDateListCsv($filePath){
        echo $filePath;
        exit;
    }
    /**
     * Create Storage File in storage inside app.
     *
     *
     */
    public static function scopeStorageDirPath(){
        $storagePath = storage_path();
        $directoryName = '/Console/'.'PaymentDatesCsv/'; // Store all CSV under common folder
        if (! Storage::exists($directoryName)) {
            Storage::makeDirectory($directoryName);
        }
        return $directoryName;
    }
}

My issue is, while I trigger my code, I am not getting value of $filePath in model file from controller,and it is giving me an error like:

 Object of class IlluminateDatabaseEloquentBuilder could not be converted to string

I have checked in google but couldn’t find proper solution. Can someone guide me how can I receive value from controller to model file?

Thanks.