title: SAPUI5 UploadCollection - How to trigger Delete File?
body: <p>I see uploaded files in my UploadCollection-Control when I Start the app.</p>
  <p>I want to delete files, after pressing the 'X' button next to the file.</p>
  <p>But after pressing the button, it doesn't call the DELETE_STREAM method in the backend.</p>
  <p>Do I have to trigger DELETE_STREAM myself in the frontend?</p>
  <p>And can I send parameters like documentid or custom parameters to DELETE_STREAM when I call it?</p>
  <pre><code>&lt;UploadCollection 
                            id=&quot;UploadCollection&quot;
                            mode=&quot;SingleSelectMaster&quot; 
                            beforeUploadStarts=&quot;onBeforeUploadStarts&quot; 
                            multiple=&quot;false&quot;
                            instantUpload=&quot;false&quot;
                            uploadUrl=&quot;/sap/opu/odata/sap/xyz&quot; 
                            uploadComplete=&quot;onUploadComplete&quot;&gt;
                            &lt;items&gt;
                              &lt;UploadCollectionItem 
                                documentId=&quot;{Documentid}&quot; 
                                fileName=&quot;{Filename}&quot;                           url=&quot;/sap/opu/odata/sap/xyz/$value&quot;
                                mimeType=&quot;{Mimetype}&quot;&gt;
                              &lt;/UploadCollectionItem&gt;
                            &lt;/items&gt;
                          &lt;/UploadCollection&gt;
  </code></pre>