101-logic-app-ftp-to-blob: parameter issue

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[Template Name goes here](Template link goes here)

### Issue Details
I use the template which is 101-logic-app-ftp-to-blob.
URL : https://github.com/Azure/azure-quickstart-templates/tree/master/101-logic-app-ftp-to-blob.

I filled in the setting form and click the deploy button.
However, I got deployment template validation fail issue.
Error message : {"telemetryId":"5209088f-1de0-49e8-9466-f95cea52399c","bladeInstanceId":"Blade_c014b34e31e74c028823f5abbbf4f3ec_0_0","galleryItemId":"Microsoft.Template","createBlade":"DeployToAzure","code":"InvalidTemplate","message":"Deployment template validation failed: 'Template parameter JToken type is not valid. Expected 'Integer'. Actual 'String'. Please see https://aka.ms/resource-manager-parameter-files for usage details.'.","additionalInfo":[{"type":"TemplateViolation","info":{"lineNumber":88,"linePosition":26,"path":"properties.template.parameters.ftpServerPort"}}]}

It said parameter is not valid, it have to be a 'integer' instead of a 'string'.
But, the parameters of template are all 'string' as default state (check the below picture).

what is the problem? and what should I do to solve this issue?

Start with the 101-logic-app-ftp-to-blob template linked in the issue and inspect the ftpServerPort parameter at the reported validation location, line 88, position 26. Reproduce deployment validation with the provided settings; done means the template accepts the port value without the Integer-versus-String error.

Written by the indexing model from the issue text.