export fields

[SERDARPINAR]

hello
my json object is custom data.. for example

{
veri : 0 ,
name:'test'
},
{
veri:1,
name:'exa'
}

i want , when exporting to excel then if veri = 0 then veri = 'planing' or veri ==1 then veri ='school' .... do you understand me?
i see , your export field prop only accept string values. how can use function on your fields export.. how can i do this.. thank you