Infininte scroll not working after disabled then enable again

Ionic Framework Ionic Angular
1

I am using ionic 5 and i am using ion-refresher and ion-infinite-scroll in one page.
when i tried to scroll new set of document is showing for the first time.But after i use the refresher infinite scroll is not working.i enabled it back after refresh

loadMoreData(event) 
// calling api here after success 
      event.target.complete();
// this is based on condition ( if array.length reaches the total number of pages)
      ithis.infiniteScroll.disabled = true;
}


doRefresh(){
  this.infiniteScroll.disabled = false;
// calling api again here
 
}

Please help
2

when i changed the limit. it worked