Integration Services :: Refresh Excel Sheets Inside SSIS?

I am trying to refresh some excel sheet I get with powerquery. After that I load the data in an sql server table to build a dummy DWH for various testing.

My goal is to automate all task and this include also the excel queries. I have seen that exits on codeplex an excel refresh task but it doesn´t work in my enviorment (SSDT 2013) or at least I have been unable to do it.

I have seen too a pragmaticworks component but I have to pay so I have discarded it.

I have tested a code that I have found in this

thread with minor changes like increase the time to refresh the excel file to 60000 and change the line

[System.AddIn.AddIn("ScriptMain", Version = "1.0", Publisher = "", Description = "")]

and replace for

[Microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute]

I run the script but neither fails nor does anything. It run sucefully without refresh. This is the entire code I run

/*
Microsoft SQL Server Integration Services Script Task
Write scripts using Microsoft Visual C# 2008.
The ScriptMain is the entry point class of the script.
*/
using System;
using System.Data;
using Microsoft.SqlServer.Dts.Runtime;
using System.Windows.Forms;
using Microsoft.Office.Interop.Excel;
namespace ST_53932a75e92c44f086535fc017a56e6a.csproj
{
[Microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute]

[code]....

P.S: I have been playing with the time it needs to refresh and I have found that set the time in 80000 works fine.