Operators are used to specify comparisons between expressions.
Yeeflow offers various types of operators. This article lists operators supported by Expression Editor.
Overview of Operators
Please Note: You need choose the corresponding element(s) when using operators.
Operators  Description  Example  Outcome 
+ (Plus or string concat) 
Plus two numbers for addition; or concat both elements(numbers and text).

[number1/Text1]+[number2/Text2] E1. 1+3; E2. 1+abc E3. a+xy 
E1. 4 E2: 1abc E3. axy 
 (Minus) 
Minus number(s) for subtraction. 
[number1][number2] 31 
2 
* (Multiply) 
Multiple numbers for multiplication. 
[number1]*[number2] 3*4 
12 
/ (Divide) 
Divide by sign for division 
[number1]/[number2] 15/3 
5 
% (Modulo) 
Return the remainder(modulus) after a division of one number by another. 
[number1]%[number2] 8%5 
3 
( (Open paren) 
Open parenthesis. It must consist of open parenthesis and close parenthesis. 
3*(5+3)  24 
) (Close paren) 
Close parenthesis. It must consist of open parenthesis and close parenthesis. 
3*(5+3)  24 
And 
Returns TRUE if all of its arguments are TRUE. Mostly it's used between expressions. 
E1: 7 > 0 and 5 > 3; E2: variable 1==ABC and variable 2>500 
E1: "Yes" or "Ture"; E2: "No" or "False" [Assumed that variable 1 is "ABD", variable 2 is "800".] 
Or 
Returns TRUE if any argument is TRUE. Mostly it's used between expressions. 
E1: 7 > 0 or 5 > 8; E2: variable 1==ABC or variable 2>500 
E1: "Yes" or "Ture"; E2: "Yes" or "True" [Assumed that variable 1 is "ABD", variable 2 is "800".] 
== (Equal) 
Equal sign, indicating the same value. Mostly it's used between functions. 
iif(variable1==A, GOOD,BAD) 
"GOOD" [Assumed that variable1 is "A"] 
!= (Not equal) 
Not equal sign, indicating not have the indicated value. Mostly it's used between functions. 
iif(variable1!=A, GOOD,BAD) 
"BAD" [Assumed that variable1 is "A"] 
> (Greater than or equal) 
Used to compare expressions, indicating numeric values higher than the comparison. 
iif(variable1>100, GOOD,BAD) 
"BAD" [Assumed that variable1 is "90"] 
>= (Greater than) 
Used to compare expressions, indicating numeric values the same or higher than the comparison.  
< (Less than) 
Used to compare expressions, indicating numeric values less than the comparison.  iif(variable1<100, Need improve,GOOD) 
"Need improve" [Assumed that variable1 is "90"] 
<= (Less than or equal) 
Used to compare expressions, indicating numeric values the same or less than the comparison. 