Is using a variable as parameter(delaymillis) in Android postDelayed available?

Question

I want to move to another Activity after 5 seconds. (Step4Activity -> WeightActivity)

I found this code, and it worked.

 new Handler().postDelayed(new Runnable()
    {
        @Override
        public void run()
        {
            Intent intent = new Intent(Step4Activity.this, WeightActivity.class);
            startActivity(intent);
        }
    }, 5000); 

But I want to use a variable 'count' as a parameter 'delaymillis' like this, but it didn't work.

 new Handler().postDelayed(new Runnable()
    {
        @Override
        public void run()
        {
            Intent intent = new Intent(Step4Activity.this, WeightActivity.class);
            startActivity(intent);
        }
    }, count * 1000);  // int count = 5

Is there any way to use variable?

Here's my full code. (Step4Activity.java)

package com.example.starbucksook;

import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

import java.util.Timer;
import java.util.TimerTask;

public class Step4Activity extends AppCompatActivity {

    //TextView countdown_text;

    //LinearLayout timeCountSettingLV, timeCountLV;
    //TextView hourET, minuteET, secondET;
    //TextView hourTV, minuteTV, secondTV, finishTV;
    //Button startBtn;
    //int hour, minute, second;
    int count = 5;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_step4);

        // Unrelated code skipped


        /*Here is 'Handler-postDelayed' method.*/
        new Handler().postDelayed(new Runnable()
        {
            @Override
            public void run()
            {
                Intent intent = new Intent(Step4Activity.this, WeightActivity.class);
                startActivity(intent);
            }
        }, count * 1000); 

}