Need to restrict upto 2 decimal places

a!floatingPointField cannot restrict decimal input during typing because it lacks a decimalPlaces parameter and relies on native browser number input behavior.
Try this

a!localVariables(
  local!dentalPremium: null,
  a!textField(
    label: "Dental Premium (Annual)",
    labelPosition: "ABOVE",
    refreshAfter: "UNFOCUS",
    value: if(
      a!isNullOrEmpty(local!dentalPremium),
      null,
      text(local!dentalPremium, "0.00")
    ),
    saveInto: a!save(
      local!dentalPremium,
      if(
        a!isNullOrEmpty(save!value),
        null,
        floor(todecimal(save!value) * 100) / 100
      )
    )
  )
)

Thanks Shubham Aware  and Mike Schmitt  .. using this i was able to achieve 80% but if i gave alphabets its throws error and it breaks the screen. Instead of that how can we show validation message .

Oops - my null check in the saveInto should have done the null test against the "todecimal" version of the save!value just to make sure it contained anything valid after invalid characters are stripped out.  Here's mine again but with that one function added back in, and it works even when junk, text-only, or mixed (number and text) info is entered.

a!localVariables(
  local!testDecimal: null(),

  a!textField(
    label: "Fake decimal entry",
    refreshAfter: "KEYPRESS",
    placeholder: "Enter Decimal Value",

    value: if(
      a!isNullOrEmpty(local!testDecimal),
      null(),
      fixed(local!testDecimal, 2)
    ),
    saveInto: {
      a!save(
        local!testDecimal,
        if(
          a!isNotNullOrEmpty(todecimal(save!value)),
          todecimal(trunc(todecimal(save!value), 2)),
          todecimal(null())
        )
      )
    }
  )
)

a!localVariables(
  local!data,
  a!floatingPointField(
    label: "Dental Premium (Annual)",
    labelPosition: "ABOVE",
    value: local!data,
    saveInto: {
      a!save(
        local!data,
        if(
          a!isNotNullOrEmpty(todecimal(save!value)),
          (save!value),
          todecimal(null())
        )
      ),

    },
    refreshAfter: "UNFOCUS",
    validations: {
      if(
        not(
          regexMatch("^[0-9]*\.[0-9]{2}$", local!data)
        ),
        "Please enter a valid number with up to 2 decimal places.",
        {}
      )
    }
  )
)

Hi Mike Schmitt Shubham Aware . Thank you for the help, it works well. But here now user dont want to truc the values instead of that expecting to show the validation so that they will give what they want either they want rounded value or raw data.

For that i tried using below regexMatch function for the validation, but the issue is it is throwing validations if we give round values (123)or 1 decimal values (12.10). Can you please help how to show validation only when they enter more then 2 decimal

Check this

a!localVariables(
  local!dentalPremium: null,
  {
    a!floatingPointField(
      label: "Dental Premium (Annual)",
      labelPosition: "ABOVE",
      value: local!dentalPremium,
      saveInto: a!save(local!dentalPremium, save!value),
      refreshAfter: "UNFOCUS",
      validations: if(
        and(
          a!isNotNullOrEmpty(local!dentalPremium),
          mod(local!dentalPremium * 100, 1) <> 0
        ),
        "Please enter a value with up to 2 decimal places (e.g., 12, 12.1, or 12.67)",
        null
      )
    ),
    a!textField(
      label: "Current Value (Debug)",
      value: local!dentalPremium,
      readOnly: true
    )
  }
)

Yes Shubham Aware  it works Thanks. out of curiosity i have one question. if we go with validation we cant keep the 2 digit formatting right?  means if user enters 12, we cannot show 12.00 or if 12.1 wont be able to show 12.10 . because then it will restrict user from typing more values right. please correct me if i am wrong.

Yes, you're correct. With validation, floatingPointField always strips trailing zeros (12 stays 12, not 12.00) because formatting with text(value, "0.00") converts to string and breaks number input.
Validation = editable but no .00 display ; Formatting = shows .00 but not editable.

Thanks Shubham Aware for sharing the knowledge.

Thanks Shubham Aware for sharing the knowledge.