Update imports_utils.py

imports_utils.py

@@ -374,6 +374,7 @@ def getDataFromGrasshopper(
 
     if inputNameAlpha is not None:
         alpha = inputJson['input'][inputNameAlpha]
+        alpha = float(alpha)
         if alpha is None:
             alpha = alphaDefault
     else:
@@ -381,6 +382,7 @@ def getDataFromGrasshopper(
         
     if inputNameThreshold is not None:
         threshold = inputJson['input'][inputNameThreshold]
+        threshold = float(threshold)
         if threshold is None:
             threshold = thresholdDefault
     else: