How can I add new field in InventValueReport - SSRS

Hi everyone ,

now I must make one future in InventValuerReport. I want to add field Description. I use Ax 2013 R3

1) I added filed Description in InventValueReportTmpLine.
2)In InventValueReportDP -> getInventValueReportTmpLine -> 

add Description field in #LOCALMACRO.GroupByFileds,
                                                                 Description,
                                                                 TrasnsactionId,
                                                                 ........,

                                                                #ENDMACRO

3) I have also looked classes InventValueReportPopulateItem and  InventValueReportPopulateResource , but i don't know what to do or change inside.

4) I get Description from EcoResProductTranslation table . I need to make join between tables:  EcoResProductTranslation and InventTable but i dont know where .

I am new in Ax , please help me.

Thank you