[Resolved] Problems Modifying Stored Procedure

I have a sp that I need to modify and having some syntax issues:
Here is my script:

SELECT dbo.Batch.ReportDate AS job_date, dbo.Job.CompanyJobId AS job_number, dbo.Item.CompanyItemId AS cost_code,

SUM(CASE dbo.SourceType.CompanySourceTypeId WHEN 'MA' then dbo.ProductionEvent.AlternateQuantity ELSE 0 END) AS qty_received,
SUM(CASE dbo.SourceType.CompanySourceTypeId WHEN 'PR' THEN dbo.ProductionEvent.Quantity ELSE 0 END) AS qty_used,
SUM(CASE dbo.SourceType.CompanySourceTypeId WHEN 'MA' then dbo.ProductionEvent.AlternateQuantity ELSE 0 END)
- SUM(CASE dbo.SourceType.CompanySourceTypeId WHEN 'PR' THEN dbo.ProductionEvent.Quantity ELSE 0 END) AS qty_wasted,
SUBSTRING(dbo.Job.CompanyJobId, 1 ,3) AS plant_id

FROM dbo.Batch INNER JOIN
dbo.Event ON dbo.Batch.BatchGuid = dbo.Event.BatchGuid INNER JOIN
dbo.Job ON dbo.Event.JobGuid = dbo.Job.JobGuid INNER JOIN
dbo.ProductionEvent ON dbo.Event.EventGuid = dbo.ProductionEvent.EventGuid INNER JOIN
dbo.Item ON dbo.Event.ItemGuid = dbo.Item.ItemGuid INNER JOIN
dbo.Source ON dbo.ProductionEvent.SourceGuid = dbo.Source.SourceGuid INNER JOIN
dbo.SourceType ON dbo.Source.SourceTypeGuid = dbo.SourceType.SourceTypeGuid left outer JOIN
dbo.Product ON dbo.ProductionEvent.ProductGuid = dbo.Product.ProductGuid

WHERE dbo.Item.UnitOfMeasure = 'TN' and dbo.Batch.ReportDate >= @DateFrom and dbo.Batch.ReportDate <= @DateTo

GROUP BY dbo.Batch.ReportDate, dbo.Job.CompanyJobId,dbo.Item.CompanyItemId


Now I need to modify this line:

SUM(CASE dbo.SourceType.CompanySourceTypeId WHEN 'MA' then dbo.ProductionEvent.AlternateQuantity ELSE 0 END) AS qty_received

to include:

and dbo.Product.CompanyProductId LIKE 'ASPH%'

New line should be:

SUM(CASE dbo.SourceType.CompanySourceTypeId WHEN 'MA' and dbo.Product.CompanyProductId when LIKE 'ASPH%'then dbo.ProductionEvent.AlternateQuantity ELSE 0 END) AS qty_received,


I get error saying: Incorrect syntax near the keyword 'and'.