[BIP Report] Could I use 'like' syntax inside if-then-else statement?

Question

I have the following contents in my xml, I would like to show the amount of the ChargeAmount, only if the "Code" is starting from "WAF"in my table.
<Transaction>
     <Account>A</Account>
     <ChargeAmount>200</ChargeAmount>
     <Code>WAF020</Code>
</Transaction>
<Transaction>
     <Account>B</Account>
     <ChargeAmount>250</ChargeAmount>
     <Code>WAF003</Code>
</Transaction>
<Transaction>
     <Account>C</Account>
     <ChargeAmount>120</ChargeAmount>
     <Code>WNL012</Code>
</Transaction>
<Transaction>
     <Account>D</Account>
     <ChargeAmount>200</ChargeAmount>
     <Code>WNL002</Code>
</Transaction>
*** Note that the three digits after WAF is variable.
Display Table:
Account || ChargeAmount || Code
A|| 200 ||WAF020
B|| 250 ||WAF003
C|| NULL ||NULL
D|| NULL ||NULL
In the ChargeAmount column I tried the following syntax, however, both of them does not work well.
<?if: <xdoxslt:left(Code, 3)>  = 'WAF' ?> then ChargeAmount else ' ' ?end if?>
<?xdofx if: Code  = 'WAF?' ?> then ChargeAmount else ' ' ?end if?>
Could any expert provide work around for the above case?
Thanks!
Connie

Answer 1

In the ChargeAmount column I tried the following syntax, however, both of them does not work well.
<?if: <xdoxslt:left(Code, 3)>  = 'WAF' ?> then ChargeAmount else ' ' ?end if?>
<?xdofx if: Code  = 'WAF?' ?> then ChargeAmount else ' ' ?end if?>
incorrect code will not work
not clear what do you want to do but try
<?xdoxslt:ifelse(xdoxslt:left(Code,3)='WAF',’yes’,’no’)?>
or
<?xdoxslt:ifelse(contains(Code, 'WAF'),’yes’,’no’)?>