{{tag>Function Function_List Miscellaneous Version:v8.1}}
====== EVAL_STRING ====== 
===== Description =====  
Evaluates the specified string as if it was a condition of the Rule Language. Returns the result of evaluation, which can either be a numeric value or “Yes/No” value
===== Syntax =====

''EVAL_STRING (expression[, ifyes, ifno])''

Cannot be used in the condition of a [[:ref:a_f:a:find|FIND]] action.

===== Parameters =====  
An expression providing a string. Two optional extra parameters specify what should happen when condition evaluates to Yes or No (see the last example)
===== Returns =====

**Yes/No**: the result of evaluating the string as a rule condition (can also be a Number; with the two extra parameters, the matching one is returned).

===== Example =====  
<code aim>Object.Attribute = 'Customer.Nmb' 
IF EVAL_STRING (Object.Attribute) = 5 THEN ... </code>
<code aim>Object.Attribute = 'Customer.Nmb >5' 
IF EVAL_STRING (Object.Attribute) = 'Yes' THEN ... </code>
<code aim>Company.Address = Company.Address1 + EVAL_STRING('Company.Address2 IS DEFINED', CR() + Company.Address2, '') </code>

===== Related =====

[[ref:a_f:f:af:exact|EXACT]], [[ref:a_f:f:af:get_attr_value|GET_ATTR_VALUE]], [[ref:a_f:f:af:cr|CR]]