Antltr || Not able to validate nested boolean condition in If block - antlr

Question

I'm facing an issue while validating the below formula with the given grammar rules.
if(2>3?ceil(loopup(12)):floor(matrix(2,3)))
However, I am able to inject the below formulas:
if(2>3?loopup(12):matrix(2,3))
if(2>3?ceil(12.2):floor(2.3))
ast
: expr+ EOF
;
expr: nestedexpr
| LOOKUP_FIELD '(' idrule ')'
| TIER_FIELD '(' idrule ',' idrule ')'
| MATRIX_FIELD '(' idrule ',' idrule ')'
| IF '(' conditionalrule '?' expr ':' expr')'
| ROUND '(' idrule ',' roundnumberrule ')'
;
nestedexpr:
nestedexpr ('*'|'/'|'+'|'-') nestedexpr
| '(' '-' nestedexpr ')'
| '(' nestedexpr ')'
| ROUND '(' expr ',' roundnumberrule ')'
| MATH_FUNCTION_FIELD '(' expr ')'
| DYNAMIC_FIELD_ID/users-ack-status
;
arithematicexpr:
arithematicexpr ('*'|'/'|'+'|'-') arithematicexpr
| '(' '-' arithematicexpr ')'
| '(' arithematicexpr ')'
| DYNAMIC_FIELD_ID
;
orrule: OR '(' conditionalrule (',' conditionalrule)+ ')';
andrule: AND '(' conditionalrule (',' conditionalrule)+ ')';
conditionalrule: orrule | andrule | relationalrule;
relationalrule: DYNAMIC_FIELD_ID RELATIONAL_OPERATOR DYNAMIC_FIELD_ID;
idrule :
DYNAMIC_FIELD_ID
;
LOOKUP_FIELD: L O O K U P ;
TIER_FIELD: T I E R;
MATRIX_FIELD: M A T R I X;
IF: I F;
AND: A N D;
OR: O R;
ROUND : R O U N D;
MATH_FUNCTION_FIELD : C E I L | F L O O R;
RELATIONAL_OPERATOR: '<' | '>' | '<=' | '>=' | '<>' | '=';
BOOL_FIELD : T R U E | F A L S E;
DYNAMIC_FIELD_ID: {isDynamicFieldId()}? . ;
roundnumberrule: ROUND_NUMBER;
ROUND_NUMBER: [0-7];
WS : [ \t\r\n]+ -> skip ;
if(2>3?ceil(loopup(12)):floor(matrix(2,3)))
The above should get parsed by the mentioned grammar rule.