%searchConditions = {

'table1.variable' => {'<', '(integer value) - table2.variable'}

};

##</code><code>##

... table1.variable - table2.variable < (integer value 1) AND 
table1.variable - table3.variable < (integer value 2)...
##</code><code>##

%searchConditions = {

'table1.variable' => {'<', '(integer value 1) - table2.variable'},
'table1.variable' => {'<', '(integer value 2) - table3.variable'}

};

##</code><code>##

%searchConditions = {

'table1.variable' => {'-and' => [{'<', '(integer value 1) - table2.variable'}, {'<', '(integer value 2) - table3.variable'}]}

};