Unable to assign a value in LightSwitch 2012 project -


i'm trying implement following code lightswitch 2012 project. i'm getting error when try assign this.expensereport value. error reads "property or indexer 'lightswitchapplication.expensereportdetails.expensereport' cannot assigned -- read only". 

partial void expensereportdetails_initializedataworkspace(list<idataservice> savechangesto)     {          // write code here.         if (this.expensereportid == -1) // -1 means new report             {        // create new expensereport                     this.expensereport = new expensereport();         }         else         {             // existing expense report                     this.expensereport = this.dataworkspace.applicationdata.expensereports_singleordefault(this.expensereportid);              // set name of tab default field on entity                     this.setdisplaynamefromentity(this.expensereport);         }

the implementation of expensereport not have set property, get propery. means can not run following line:

this.expensereport = this.dataworkspace.applicationdata.expensereports_singleordefault(this.expensereportid);

can change expensereport writable?


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