repositorylookupedit - Devexpress RespositoryLookUpEdit in grid , the value disaper -

i have devexpressgridcontrol. want use in 1 column of grid : repositorylookupedit. fill repositorylookupedit database question. question return 3 columns : idperson , name , idcity. colums : idperson , name have data idcity have set in appication.

so - in gridcontrol column idcity has fildename : idcity, , columnedit : repositorylookupedit. - repositorylookupedit has displayvalue : cityname, , valuemember: idcity.

and question is:

when choose in grid in 1 row value of city , go row, value first row disaper.

what doing wrong? give me advise?

i use devexpress 9.2.

this.gvperson = new devexpress.xtragrid.views.grid.gridview();  this.repluecity = new devexpress.xtraeditors.repository.repositoryitemlookupedit(); this.repluecity.columns.addrange(new devexpress.xtraeditors.controls.lookupcolumninfo[] { new     devexpress.xtraeditors.controls.lookupcolumninfo("idcity", "idcity", 20,     devexpress.utils.formattype.none, "", false, devexpress.utils.horzalignment.default), new devexpress.xtraeditors.controls.lookupcolumninfo("cityname", "cityname")}); this.repluecity.displaymember = "cityname";  this.repluecity.name = "repluecity";  this.repluecity.nulltext = "[choose city]";  this.repluecity.texteditstyle = devexpress.xtraeditors.controls.texteditstyles.standard;  this.replueoceny.valuemember = "idcity";  // citycolumn this.citycolumn.appearancecell.options.usetextoptions = true;  this.citycolumn.appearancecell.textoptions.halignment = devexpress.utils.horzalignment.center;  this.citycolumn.appearancecell.textoptions.valignment = devexpress.utils.vertalignment.center;  this.citycolumn.caption = "ocena";  this.citycolumn.columnedit = this.repluecity;  this.citycolumn.fieldname = "idcity";  this.citycolumn.name = "idcityname";  this.citycolumn.visible = true; 

you have set valuemember repluecity (which editor in column). set replueoceny.

check string idcity in 3 cases: must written same (mind caps!).