toInteger() parameters

When converting a string to integer in Appian, tointeger() strips all the non numeric characters from the string and them returns only the numeric characters and casts it into a numeric data type.

for Example: if you have an array of String {"sdfv1254s5dfv", "15dfv125svd"}
using an tointeger() on this will return an array of integers

Expression: tointeger({"sdfv1254s5dfv", "15dfv125svd"})
Output:
Type: List of Number (Integer)
Output: {12545,15125}

and if you want to verify if a type of input then you can use typename(typeof("ab7cde?z2n7k")) this will return text

When converting a string to integer in Appian, tointeger() strips all the non numeric characters from the string and them returns only the numeric characters and casts it into a numeric data type.

for Example: if you have an array of String {"sdfv1254s5dfv", "15dfv125svd"}
using an tointeger() on this will return an array of integers

Expression: tointeger({"sdfv1254s5dfv", "15dfv125svd"})
Output:
Type: List of Number (Integer)
Output: {12545,15125}

and if you want to verify if a type of input then you can use typename(typeof("ab7cde?z2n7k")) this will return text

The strange thing is that it is not written in the documentation.

yes, I agree with you Bhushan