I am using a custom column type that turns the ron type into red when negative (based on one of your examples). The type name is roncl.
This type prevents an export to eXcel. If I change my col types back to ron the export works fine.
//extended ron to use color for number
function eXcell_roncl(cell){
this.base=eXcell_ron;
this.base(cell);
this.setValue=function(val){
if(!val||val.toString()._dhx_trim()==“”)val=“0”;
if(val>=0)this.cell.style.color=“black”;
else this.cell.style.color=“red”;
this.cell.innerHTML=this.grid._aplNF(val,this.cell._cellIndex);
}
};
eXcell_roncl.prototype=new eXcell_ron;