Use correct labels instead of ISO codes.

app.py

@@ -13,9 +13,10 @@ VARIANTS = list(ISO_CODES.values())
 MODELS = {}
 
 def tts(text, variant):
-    if variant not in MODELS:
-        MODELS[variant] = TTS(variant)
-    model = MODELS[variant]
+    variant_code = ISO_CODES[variant]
+    if variant_code not in MODELS:
+        MODELS[variant_code] = TTS(variant_code)
+    model = MODELS[variant_code]
     audio = model.synthesis(text)
     return (audio['sampling_rate'], audio['x'])
 
@@ -29,7 +30,7 @@ iface = gr.Interface(
             label="Text",
             default="Text to synthesize.",
         ),
-        gr.inputs.Dropdown(label="Variant", choices=ISO_CODES.values(), default=VARIANTS[0])
+        gr.inputs.Dropdown(label="Variant", choices=list(ISO_CODES.keys()), default="Tachelhit")
     ],
     outputs=gr.outputs.Audio(label="Output", type="numpy"),
     examples=examples,