To output the value of any variable in a string, you can use the string interpolation helper: double curly braces {{ }}.
This makes it extremely easy to concatenate multiple values of any type into a single string. Objects, arrays and numbers will be stringified automatically and missing properties will be evaluated as NULL.
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say "Hi! My name is {{what}}"
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say "My name is {{who}}"
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say "My name is {{slim_shady}}"
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// Printing values from object properties is also possible:
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say "Hi! My name is {{eminem.what}}"
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say "My name is {{eminem.who}}"
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say "My name is {{eminem.slim_shady}}"
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// Alternatively, the following syntax is possible too, but will result in only one text bubble:
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start:
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say "Hi! My name is {{what}}. My name is {{who}}. My name is {{slim_shady}}"