problem with link

problem with link

hi, what's wrong with this code?
it says "link not found"


if(input.Candidato != null)
{
//populate field
input.plain = "<a href=' https://app.zohocreator.com/" + zoho.appuri + "/#Form:Calendario_Form_Link_Name?recLinkID=" + input.Candidato + "&viewLinkName=Elenco_Contatti_View_Report_Link_Name&zc_LoadIn=dialog'>Open Record</a>";
show plain;
}
else
{
hide plain;
}