Dynamic sql in SSRS using parameters

I have 5 parameters defined:

1. TopCount

2. StartDate

3. EndDate

4. RegionCode

5. Order

I have the following code as query type = text:

set nocount on

-----------------------------------------------------------------------------------
--Create temp tables
CREATE TABLE #Securities(SecurityID int, SecurityName varchar(100), Identifier varchar(12), PrimaryExchangeID int,
StartPrice money, EndPrice money, PriceVariance float,
SharesOutStartDate bigint, SharesOutEndDate bigint,
SharesOutVariance numeric(18,4), StartDateIntrinsicRate numeric(18,4), EndDateIntrinsicRate numeric(18,4),
ChangeInIntrinsicRate numeric(18,4))
-----------------------------------------------------------------------------------

INSERT INTO #Securities(SecurityID, SecurityName, Identifier, PrimaryExchangeID, StartPrice)
Select s.SecurityID, s.SecurityName, s.PrimaryISIN, s.PrimaryExchangeID, t.Price
From SecMast.dbo.Securities s with (nolock)
 inner join SecMast.dbo.TradingData t with (nolock)
  on s.SecurityID = t.SecurityID
 inner join SecMast.dbo.AssetClasses a with (nolock)
  on s.AssetClassID = a.AssetClassID
 inner join SecMast.dbo.Countries c with (nolock)
  on s.ISOCountryCode = c.ISOCountryCode
Where t.[Date] = @StartDate
 and a.AssetClassGroupID = 'EQU'
 and t.Price is not null
 and t.ExchangeID = s.PrimaryExchangeID
 and c.RegionCode = @RegionCode
-----------------------------------------------------------------------------------
--Update temp table
Update s
Set EndPrice = t.Price
From #Securities s
 inner join SecMast.dbo.TradingData t with (nolock)
  on s.SecurityID = t.SecurityID
Where t.[Date] = @EndDate
 and t.Price is not null
 and t.ExchangeID = s.PrimaryExchangeID

Delete from #Securities Where EndPrice is null

="Update s Set SharesOutStartDate = (isnull(d.Units,0)), StartDateIntrinsicRate = d.LoanRateAvg From #Securities s inner join Summary.dbo.daisyx_persecurity d with (nolock) on s.SecurityID = d.SecurityID Where d.[Date] = 'CAST(" & Parameters!StartDate.Value& " as varchar(30))' and d.ContractTypeID = 11  and d.LoanStageID = 1 and d.CollateralTypeID = 'A' and d.CollateralCurrencyID = 'AAA'"

--I get an error on the last update statement.  I am not sure what is wrong here.  Any ideas?