How to limit the maximum number of files in the primeng FileUpload component?

I have a PrimeNg FileUpload component and what I want is to limit the maximum amount of files that can be uploaded.

I tried to do it with the attribute fileLimit but it doesn't work.

<p-fileUpload id="fileUploader" maxFileSize="{{ pesoMaximoArchivoDocumentacion }}"
invalidFileSizeMessageDetail="{{ mensajeSuperaPeso }}" fileLimit="4"
invalidFileTypeMessageDetail="{{ mensajeFormatoNoValido }}" *ngIf="isAttach(element.valor)"
#fileUploader name="Files{{ i }}" id="{{ element.parametro }}" accept=".pdf" [auto]="true"
[multiple]="isMultipleDoc(element.valor)" customUpload="true" (onSelect)="onSelect(fileUploader)"
(uploadHandler)="
onUploadConst($event, 1, fileUploader, element.valor)
" chooseLabel="Adjuntar">
<ng-template let-file pTemplate="file">
<div class="d-flex p-2 rounded align-items-center text-center flex-column flex-xl-row mb-3" [ngClass]="{
'btn-background-white': i % 2 == 0,
'btn-background-gray': i % 2 != 0
}">
<div class="ccb-cae-imagen-img-delete mr-xl-1"
style="background-size: 30px; background-position: center">
images
</div>
<span class="txt-name-file p-xl-2 text-wrap text-break mb-2 mb-xl-0 text-xl-left">{{ file.name
}}</span>
<button class="btn-delete w-auto h-auto" (click)="
removeFileConst(file, fileUploader, 1, element.valor)
">
<em class="fa fa-trash-o icon-btn-delete"></em>
</button>
</div>
</ng-template>
<ng-container *ngIf="element.valor == documentoReformas">
<ng-template pTemplate="content">
<div class="text-center" id="btn-add-container" hidden>
<button mat-icon-button type="button" (click)="add()" *ngIf="this.listDocsAux[2].archivos < 4">
<mat-icon class="btn-add-doc">add_circle</mat-icon>
</button>
</div>
</ng-template>
</ng-container>
</p-fileUpload>

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