Hi Renato,

Out of the box this wouldn't work well the way the InputPatternMask is implemented right now.
You can now only use these 'basic' definitions in your pattern (see also https://imask.js.org/guide.html#masked-pattern ):

• 0 - any digit
• a - any letter
• * - any char
• other chars which is not in custom definitions supposed to be fixed
• [] - make input optional
• {} - include fixed part in unmasked value
• ` - prevent symbols shift back

It seems better to clone the InputPatternMask and make a custom version of it for Time values like this.
You can then use a more complex pattern with custom 'blocks', as in this CodePen.

Although selecting AM and PM might be better done in a separate dropdown.