Create Record and pass a Lookup ID from another module

Hello Guys,

I'm using creator to create a record in Contacts Module and one in Leads Module. I'm doing that to separate fields that I use in each Module.

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fieldMapLeads.put("Last Name",input.name);

createLead = zoho.crm.create("Leads", fieldMapLeads);

fieldMapContacts.put("Last Name",input.name);

fieldMapContacts.put("Lead Lookup",createLead.get("Id"));

createRecord = zoho.crm.create("Contacts", fieldMapContacts);

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On Contacts: "Lead Lookup" is a lookup field that points to a Lead Record

Now my question:

How can I pass into to the fieldMap of Contacts, a Record from Lead?? Basically, let that red line working.

Thanks in advance.

Looking forward to you help.

Nelson