Getting a "Failed to parse String literal at velocity" when having multiple "." in condition (pattern)

[dabeidl]

Error:
Failed to parse String literal at velocity...

GraphQLSchema:
type User @model {
id: ID!
email: String! @Assert(condition: ".matches("[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}")")

In vtl, I get
$ctx.args.input.email.matches("[a-z0-9.%+-]+@[a-z0-9$ctx.args.input.email.-]+$ctx.args.input.email[a-z]{2,4}")
instead of
$ctx.args.input.email.matches("[a-z0-9.%+-]+@[a-z0-9.-]+\.email[a-z]{2,4}")

[dabeidl]

I managed to work around the problem by using \x{002E} instead of .