Now my final issue before submit this project is about stages, on my sales process inside OpportunityInfo.aspx page couldn't move from one stage to another stage. I have put print screen on my issue inside this tread below and If you have available time hope can view my thread below:
1) Ax2009 CRM>Opportunity: Sales process has been created

2) AX2009(client): From here you can see that, if sales process are equal to testing so in PipelineStage** it allow to move from stage 1 to next stages by using SmmStageMini(webpart) in EP.

3) EP: Webpart>user control>SmmOpportunityheader.
Webpart: Set as Provider and connect to SmmStageMini and DynamicToolbar
But Error was display as below, is it will effected my function ?


4) Even thou the error display during inserted SmmOpportunityHeader into the Webpart, I it still managed to display information of the SmmOpportunityHeader successfully in EP and as usual I have set the webpart SmmOpportunityHeader as Provider and connected to Dynamic Toolbar and SmmStageMini.

5) EP: Webpart>SmmStageMini
Consumer and connected to SmmOpportunityHeader (Opportunity)
From here it have issue on move into another stages. Will you explain what approach that need to consider?