setImage to switch picture

After onbuttonclick, I want to switch an image in a gridcell to another image. mygrid.cells(1,1).setImage(url) does not seem to work. I get an errormessage saying that setImage is not a function. Am I doing something wrong or is there another way of dynamicalling swithing images in a grid without reloading the complete page from the server?

The setImage works for “img” or “tree” excell types only.
If problem occurs for one of mentioned type - please be sure that cells(i,j) point to existing row and cell.
For any other cell type, if you want to set an image you can use next approach
    grid.cells(i,j).setValue("");

Also, there is an issue in current build ( 1.4 71022 ) which may prevent setImage works correctly in some circumstances.
If problem occurs for “tree” column type - please contact directly at support@dhtmlx.com and provide your ref. number - we will send you updated js file.