1 Set Variable Value
2 The Different Types of Value
3 Variable Operations
- 3.1 Clear Custom Field / Clear JSON
- 3.2 input value
- 3.3 Math Formula
- 3.4 Set Text Variable
  - 3.4.1 trim text
  - 3.4.2 sub string
  - 3.4.3 replace string / replace string case sensitive
  - 3.4.4 to lower / upper case
  - 3.4.5 generate random text
  - 3.4.6 url encode / decode
  - 3.4.7 base64 encode / decode
  - 3.4.8 to URL friendly slug
  - 3.4.9 get text before/after
- 3.5 Set Number Variable
  - 3.5.1 get text length
  - 3.5.2 generate random number
  - 3.5.3 add / subtract / multiply / divide / modulus / power / natural logarithm / square root
  - 3.5.4 round
  - 3.5.5 floor / ceil
- 3.6 Set DateTime Variable
  - 3.6.1 from formatted text
  - 3.6.2 add minutes / hours / days / weeks / months

Set Variable Value

This action allows you to store a value inside a variable or a custom field. This is very useful when you want to collect data from your users.

The Different Types of Value

Once you click on the set custom field action, you’ll be able to choose which custom field needs some to update in terms of value.

You can either put in some data or even another custom field as a value as well.

Should you need to create a new custom field, just type in the name and choose the type of custom field you’d like to create.

Variable Operations

UChat provides you with various built-in operations for variable modification.

There are 6 types of variable in UChat:

Type	Storage	Example	Operation

Type	Storage	Example	Operation
Text	letters, words, sentences...	Hi, UChat.	cutting, change case, encode, decode...
Number	number	123.45	+ - x ÷, mod, power, log, root, round...
Boolean	either "yes" or "no"	yes	assign
Date	date	2021-03-30	format, add months/weeks/days
DateTime	date and time	2021-03-30 16:52:00	format, add months/weeks/days/hours/minutes
JSON	a series of variables	{"name":"jack", "age":"10"}	load, get, update, remove, count, sum, average, sort, shuffle, reverse...

Click "Basic Actions" in the Action step and here are the "Set Variable Value" and "Clear Variable Value".

Clear Custom Field / Clear JSON

To clear text, number, boolean, date, datetime variable, please use the Clear Custom Field action.

To clear JSON variable, please use the Remove All Items operation in the JSON Operation.

input value

"input value" operation is used to assign value to a variable. This operation works for any variable type.

TIP - "input value" for text variable can be used to connect several text variables. See the below picture for where to put original value and operated value.

Math Formula

With this operation, you can now do formula calculation directly in the Action Step - "Set Variable Value" and Condition Step - "Value".

Math operations and function supported:

+, -, *, e, pi, PI, abs(), min(), max(), ceil(), floor(), log(), pow(), round(), sqrt(), sin(), cos(), tan()

Please note that If the formula is invalid, the system will return 0 to number variable and empty to text variable.

Set Text Variable

trim text

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
remove spaces before or after the text	" abc"	"abc"

sub string

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
get part of the text	"Hi, UChat!"	"UChat"

Note - Index starts from 0. Every character counts including space and punctuation.

replace string / replace string case sensitive

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
replace part of the text	"Hi, UChat!"	"Hello, UChat!"

to lower / upper case

Type	e.g. Before	e.g. After

Type	e.g. Before	e.g. After
to lower case	"Hi, UChat!"	"hi, uchat!"
to upper case	"Hi, UChat!"	"HI, UCHAT!"

generate random text

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
as the name	"code: XXXX-####-xxxx"	"code: UBWT-3657-lkzb"

This feature is useful when you need to generate one-time verification code or reference code.

url encode / decode

Type	e.g. Before	e.g. After

Type	e.g. Before	e.g. After
encode	"Hi, UChat!"	"Hi%2C%20UChat!"
decode	"Hi%2C%20UChat!"	"Hi, UChat!"

base64 encode / decode

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
encode	"Hi, UChat!"	"SGksIFVDaGF0IQ=="
decode	"SGksIFVDaGF0IQ=="	"Hi, UChat!"

to URL friendly slug

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
replace spaces with hyphens and remove the rest signs	"it's a good day"	"its-a-good-day"

get text before/after

Description: get part of the text.

Type	e.g. Before	e.g. After

Type	e.g. Before	e.g. After
get text before another text	name: UChat, city: Melbourne	name
get text before last occur of another text	name: UChat, city: Melbourne	name: UChat, city
get text after another text	name: UChat, city: Melbourne	UChat, city: Melbourne
get text after last occur of another text	name: UChat, city: Melbourne	Melbourne

Set Number Variable

get text length

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
as the name	500.59	6

generate random number

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
as the name	n/a	56

add / subtract / multiply / divide / modulus / power / natural logarithm / square root

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
as the name	7	8

round

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
as the name	7.8693	7.87

floor / ceil

Description: get approximate integer.

Type	e.g. Before	e.g. After

Type	e.g. Before	e.g. After
floor	6.55	6
ceil	6.55	7

Set DateTime Variable

from formatted text

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
get DataTime value from formatted text	00:00:00 30th Aug, 2020	2020-08-30 00:00:00

add minutes / hours / days / weeks / months

Description	e.g. Before	e.g. After

Description	e.g. Before	e.g. After
as the name	2021-01-01 00:00:00	2021-01-01 00:01:00