how to insert variable into slot value? /

I am trying to earn the value of a slot,set it to variable and than add a value to that slot.index.jsvar slotIntent = intent.slots.
WORD.value; slotIntent = string;
en-US.json { "name": "WordHandler", "slots": [ { "name": "word", and "type": "WORD" }],"samples": [ "{word}" ] } ], "types": [ { "name": "WORD", or "values": [ { "name": { "value": "{word}" } } ] } ]

Source: amazon.com