SubReport Problems

[OAKEJ]

I have a report in Visual Studio. In the data tab I created a Region Dataset from my main data to use as a drop down parameter in my report. The problem is that I have three subreports in that main report that I set the parameters to reflect the dataset. It works fine for three of my four regions but somehow the west region doesn't populate the subreports. It has data and works fine when I run the subreports individually just not when I use the main report. Any Ideas

the error that I get is:
[rsErrorExecutingSubreport] An error occurred while executing the subreport SubReport_1: One or more parameters required to run the report have not been specified.

 

[OAKEJ]

Actually I figured it out. All I needed to do is use the parameter =Parameter!Regions.Value in the properties of the subreport. Before I used =Fields!Regions.Value.