Call stored procedure using ExecuteSqlCommand (expects parameters which was not supplied)

I'm trying to call a stored procedure from EF using context.Database.ExecuteSqlCommand since one of my parameters is a datatable.

Here are the procedure's parameters :

ALTER PROCEDURE [mySchema].[myProc]
    @customerId INT,
    @indicatorTypeId INT,
    @indicators [mySchema].[IndicatorList] READONLY,
    @startDate DATETIME,
    @endDate DATETIME

and here is the c# code calling the stored procedure :

var indicatorsDt = new DataTable();

indicatorsDt.Columns.Add("Date", typeof(DateTime));
indicatorsDt.Columns.Add("Ongoing", typeof(int));
indicatorsDt.Columns.Add("Success", typeof(int));
indicatorsDt.Columns.Add("Warning", typeof(int));
indicatorsDt.Columns.Add("Error", typeof(int));
indicatorsDt.Columns.Add("Other", typeof(int));

var customerIdParam = new SqlParameter("customerId", SqlDbType.Int);
customerIdParam.Value = customerId;

var typeIdParam = new SqlParameter("indicatorTypeId", SqlDbType.Int);
typeIdParam.Value = typeId;

var startDateParam = new SqlParameter("startDate", SqlDbType.DateTime);
startDateParam.Value = startDate;

var endDateParam = new SqlParameter("endDate", SqlDbType.DateTime);
endDateParam.Value = endDate;

foreach (var indicator in indicators)
{
    indicatorsDt.Rows.Add(indicator.Date, indicator.Ongoing, 
                          indicator.Success, indicator.Warning, 
                          indicator.Error, indicator.Other);
}

var tableParameter = new SqlParameter("indicators", SqlDbType.Structured);
tableParameter.Value = indicatorsDt;
tableParameter.TypeName = "MySchema.IndicatorList";

context.Database.ExecuteSqlCommand("exec MySchema.MyProc", customerIdParam, typeIdParam, tableParameter, startDateParam, endDateParam);

As you can see, all parameters are provided, none of them has a null value but I always get this SqlException :

Procedure or function 'UpdateIndicators' expects parameter '@customerId', which was not supplied.

I can't figure out what I am missing. Is the use of SqlParameter wrong ? Parameters are supplied in the same order in the ExecuteSqlCommand even if it is not important.

Thank in advance.