Alway passing value to subreport even if i not passing it

I got the next problem. I got report in which i have two field ProjectCD and TaskCD. TaskCD is not required and if it not selected it should show all task that project have.

I i run it only using subreport everything look good
Without task selected

With task selected
 

But for main report if i don’t select Task it alway will show first one.
 

But if i will select task it will show selected task
 

There are my params for main report for Task
 

Collection that i send to subreport
 

And params for subreport
 

And the view that i use for calculation values
 

[Serializable]
    [PXCacheName(CAMSPMProjectDetailsTransactionsTaskIDViewCacheName)]
    public class CAMSPMProjectDetailsTransactionsTaskIDView : IBqlTable
    {
        private const string CAMSPMProjectDetailsTransactionsTaskIDViewCacheName = "Project Details Transactions Task View";

        #region ProjectID
        [PXDBInt(IsKey = true)]
        public virtual int? ProjectID { get; set; }
        public abstract class projectID : BqlInt.Field<projectID> { }
        #endregion

        #region TaskID
        [PXDBInt(IsKey = true)]
        public virtual int? TaskID { get; set; }
        public abstract class taskID : BqlInt.Field<taskID> { }
        #endregion

        #region TaskCD
        [PXDBString(IsUnicode = true, /*IsKey = true,*/ InputMask = "")]
        [PXSelector(typeof(Search<PMTask.taskCD>),
            typeof(PMTask.taskCD), typeof(PMTask.description), typeof(PMTask.isActive),
            SubstituteKey = typeof(PMTask.taskCD), DescriptionField = typeof(PMTask.description))]
        public virtual string TaskCD { get; set; }
        public abstract class taskCD : BqlString.Field<taskCD> { }
        #endregion

        #region GroupCD
        [PXDBString(IsUnicode = true, IsKey = true, InputMask = "")]
        [PXDimensionSelector(AccountGroupAttribute.DimensionName,
        typeof(Search<PMAccountGroup.groupCD>),
        typeof(PMAccountGroup.groupCD),
            typeof(PMAccountGroup.groupCD), typeof(PMAccountGroup.description), typeof(PMAccountGroup.type), typeof(PMAccountGroup.isActive), DescriptionField = typeof(PMTask.description))]
        public virtual string GroupCD { get; set; }
        public abstract class groupCD : BqlString.Field<groupCD> { }
        #endregion

        #region GroupID
        [PXDBInt]
        public virtual int? GroupID { get; set; }
        public abstract class groupID : BqlInt.Field<groupID> { }
        #endregion

        #region Type
        [PXDBString(IsKey = true)]
        [PMAccountType.List]
        public virtual string Type { get; set; }
        public abstract class type : BqlString.Field<type> { }
        #endregion

        #region MTD
        [PXDBDecimal]
        [PXDefault(TypeCode.Decimal, "0.00", PersistingCheck = PXPersistingCheck.Nothing)]
        public virtual decimal? MTD { get; set; }
        public abstract class mTD : BqlDecimal.Field<mTD> { }
        #endregion

        #region PTD
        [PXDBDecimal]
        [PXDefault(TypeCode.Decimal, "0.00", PersistingCheck = PXPersistingCheck.Nothing)]
        public virtual decimal? PTD { get; set; }
        public abstract class pTD : BqlDecimal.Field<pTD> { }
        #endregion

        #region Commitment
        [PXDBDecimal]
        [PXDefault(TypeCode.Decimal, "0.00", PersistingCheck = PXPersistingCheck.Nothing)]
        public virtual decimal? Commitment { get; set; }
        public abstract class commitment : BqlDecimal.Field<commitment> { }
        #endregion

        #region PDTPlusCommitment
        [PXDBDecimal]
        [PXDefault(TypeCode.Decimal, "0.00", PersistingCheck = PXPersistingCheck.Nothing)]
        public virtual decimal? PDTPlusCommitment { get; set; }
        public abstract class pDTPlusCommitment : BqlDecimal.Field<pDTPlusCommitment> { }
        #endregion

        #region Budget
        [PXDBDecimal]
        [PXDefault(TypeCode.Decimal, "0.00", PersistingCheck = PXPersistingCheck.Nothing)]
        public virtual decimal? Budget { get; set; }
        public abstract class budget : BqlDecimal.Field<budget> { }
        #endregion

        #region Variance
        [PXDBDecimal]
        [PXDefault(TypeCode.Decimal, "0.00", PersistingCheck = PXPersistingCheck.Nothing)]
        public virtual decimal? Variance { get; set; }
        public abstract class variance : BqlDecimal.Field<variance> { }
        #endregion

        #region CreditGroup
        [PXDBDecimal]
        [PXDefault(TypeCode.Decimal, "0.00", PersistingCheck = PXPersistingCheck.Nothing)]
        public virtual decimal? CreditGroup { get; set; }
        public abstract class creditGroup : BqlDecimal.Field<creditGroup> { }
        #endregion

        #region CreditGroupMTD
        [PXDBDecimal]
        [PXDefault(TypeCode.Decimal, "0.00", PersistingCheck = PXPersistingCheck.Nothing)]
        public virtual decimal? CreditGroupMTD { get; set; }
        public abstract class creditGroupMTD : BqlDecimal.Field<creditGroupMTD> { }
        #endregion
    }